VMCI: Fix an error handling path in vmci_guest_probe_device()

After a successful pci_iomap_range() call, pci_iounmap() should be called
in the error handling path, as already done in the remove function.

Add the missing call.

The corresponding call was added in the remove function in commit
5ee109828e73 ("VMCI: dma dg: allocate send and receive buffers for DMA
datagrams")

Fixes: e283a0e8b7ea ("VMCI: dma dg: add MMIO access to registers")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Vishnu Dasa <vishnu.dasa@broadcom.com>
Link: https://lore.kernel.org/r/a35bbc3876ae1da70e49dafde4435750e1477be3.1713961553.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/vmw_vmci/vmci_guest.c b/drivers/misc/vmw_vmci/vmci_guest.c
index 4f8d962bb5b2a388c80d03d5edbd280efcc325c6..1300ccab3d21b18fdff2d14970f9b8de8af6d9f5 100644 (file)
--- a/drivers/misc/vmw_vmci/vmci_guest.c
+++ b/drivers/misc/vmw_vmci/vmci_guest.c
@@ -625,7 +625,8 @@ static int vmci_guest_probe_device(struct pci_dev *pdev,
        if (!vmci_dev) {
                dev_err(&pdev->dev,
                        "Can't allocate memory for VMCI device\n");
-               return -ENOMEM;
+               error = -ENOMEM;
+               goto err_unmap_mmio_base;
        }
 
        vmci_dev->dev = &pdev->dev;
@@ -642,7 +643,8 @@ static int vmci_guest_probe_device(struct pci_dev *pdev,
                if (!vmci_dev->tx_buffer) {
                        dev_err(&pdev->dev,
                                "Can't allocate memory for datagram tx buffer\n");
-                       return -ENOMEM;
+                       error = -ENOMEM;
+                       goto err_unmap_mmio_base;
                }
 
                vmci_dev->data_buffer = dma_alloc_coherent(&pdev->dev, VMCI_DMA_DG_BUFFER_SIZE,
@@ -893,6 +895,10 @@ err_free_notification_bitmap:
 err_free_data_buffers:
        vmci_free_dg_buffers(vmci_dev);
 
+err_unmap_mmio_base:
+       if (mmio_base != NULL)
+               pci_iounmap(pdev, mmio_base);
+
        /* The rest are managed resources and will be freed by PCI core */
        return error;
 }