Make sure not to fall through on error in loadvm

This is from the KVM tree
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

savevm.c

@@ -855,6 +855,7 @@ static int qemu_loadvm_state_v2(QEMUFile *f)
             if (ret < 0) {
                 fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n",
                         instance_id, idstr);
+                return ret;
             }
         }
         /* always seek to exact end of record */