spapr: Plug memory leak when we can't add a migration blocker

Fixes: 2500fb423adb17995485de0b4d507cf2f09e3a7f
Cc: Aravinda Prasad <arawinda.p@gmail.com>
Cc: Ganesh Goudar <ganeshgr@linux.ibm.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210720125408.387910-3-armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index 23e2e2fff17ae9559e05e6972cf911276c313e8f..690533cbdc6c331c4cabcf594adcd51a157f9ad3 100644 (file)
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -872,7 +872,6 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
     CPUState *cs = CPU(cpu);
     int ret;
-    Error *local_err = NULL;
 
     if (spapr->fwnmi_machine_check_addr == -1) {
         /* Non-FWNMI case, deliver it like an architected CPU interrupt. */
@@ -912,7 +911,7 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
         }
     }
 
-    ret = migrate_add_blocker(spapr->fwnmi_migration_blocker, &local_err);
+    ret = migrate_add_blocker(spapr->fwnmi_migration_blocker, NULL);
     if (ret == -EBUSY) {
         /*
          * We don't want to abort so we let the migration to continue.