vfio/igd: Use g_autofree in vfio_probe_igd_bar4_quirk()

Pointer opregion, host and lpc are allocated and freed in
vfio_probe_igd_bar4_quirk(). Use g_autofree to automatically
free them.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/hw/vfio/igd.c b/hw/vfio/igd.c
index 1e79202f2bd136b0bafd4f08c2f1407e467e0d65..d320d032a7f3b19df0d055178f6fefe4bdfd8668 100644 (file)
--- a/hw/vfio/igd.c
+++ b/hw/vfio/igd.c
@@ -368,7 +368,9 @@ static const MemoryRegionOps vfio_igd_index_quirk = {
 void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
 {
     g_autofree struct vfio_region_info *rom = NULL;
-    struct vfio_region_info *opregion = NULL, *host = NULL, *lpc = NULL;
+    g_autofree struct vfio_region_info *opregion = NULL;
+    g_autofree struct vfio_region_info *host = NULL;
+    g_autofree struct vfio_region_info *lpc = NULL;
     VFIOQuirk *quirk;
     VFIOIGDQuirk *igd;
     PCIDevice *lpc_bridge;
@@ -426,7 +428,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if ((ret || !rom->size) && !vdev->pdev.romfile) {
         error_report("IGD device %s has no ROM, legacy mode disabled",
                      vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     /*
@@ -437,7 +439,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
         error_report("IGD device %s hotplugged, ROM disabled, "
                      "legacy mode disabled", vdev->vbasedev.name);
         vdev->rom_read_failed = true;
-        goto out;
+        return;
     }
 
     /*
@@ -450,7 +452,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if (ret) {
         error_report("IGD device %s does not support OpRegion access,"
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     ret = vfio_get_dev_region_info(&vdev->vbasedev,
@@ -459,7 +461,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if (ret) {
         error_report("IGD device %s does not support host bridge access,"
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     ret = vfio_get_dev_region_info(&vdev->vbasedev,
@@ -468,7 +470,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if (ret) {
         error_report("IGD device %s does not support LPC bridge access,"
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     gmch = vfio_pci_read_config(&vdev->pdev, IGD_GMCH, 4);
@@ -482,7 +484,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
         error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
         error_report("IGD device %s failed to enable VGA access, "
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     /* Create our LPC/ISA bridge */
@@ -490,7 +492,7 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if (ret) {
         error_report("IGD device %s failed to create LPC bridge, "
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     /* Stuff some host values into the VM PCI host bridge */
@@ -498,14 +500,14 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     if (ret) {
         error_report("IGD device %s failed to modify host bridge, "
                      "legacy mode disabled", vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     /* Setup OpRegion access */
     if (!vfio_pci_igd_opregion_init(vdev, opregion, &err)) {
         error_append_hint(&err, "IGD legacy mode disabled\n");
         error_reportf_err(err, VFIO_MSG_PREFIX, vdev->vbasedev.name);
-        goto out;
+        return;
     }
 
     /* Setup our quirk to munge GTT addresses to the VM allocated buffer */
@@ -607,9 +609,4 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr)
     }
 
     trace_vfio_pci_igd_bdsm_enabled(vdev->vbasedev.name, ggms_mb + gms_mb);
-
-out:
-    g_free(opregion);
-    g_free(host);
-    g_free(lpc);
 }