pvrdma: release device resources in case of an error

If during pvrdma device initialisation an error occurs,
pvrdma_realize() does not release memory resources, leading
to memory leakage.
Reported-by: NLi Qiang <liq3ea@163.com>
Signed-off-by: NPrasad J Pandit <pjp@fedoraproject.org>
Message-Id: <20181212175817.815-1-ppandit@redhat.com>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com>

hw/rdma/vmw/pvrdma_main.c

@@ -573,7 +573,7 @@ static void pvrdma_shutdown_notifier(Notifier *n, void *opaque)
 
 static void pvrdma_realize(PCIDevice *pdev, Error **errp)
 {
-    int rc;
+    int rc = 0;
     PVRDMADev *dev = PVRDMA_DEV(pdev);
     Object *memdev_root;
     bool ram_shared = false;
@@ -649,6 +649,7 @@ static void pvrdma_realize(PCIDevice *pdev, Error **errp)
 
 out:
     if (rc) {
+        pvrdma_fini(pdev);
         error_append_hint(errp, "Device fail to load\n");
     }
 }