virtio-mem: drop unnecessary initialization

rc is initialized to -ENIVAL but that's never used. Drop it.

Fixes: 5f1f79b ("virtio-mem: Paravirtualized memory hotplug")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Acked-by: David Hildenbrand <[email protected]>

Author: mstsirkin

drivers/virtio/virtio_mem.c

@@ -1768,7 +1768,7 @@ static void virtio_mem_delete_resource(struct virtio_mem *vm)
 static int virtio_mem_probe(struct virtio_device *vdev)
 {
 	struct virtio_mem *vm;
-	int rc = -EINVAL;
+	int rc;
 
 	BUILD_BUG_ON(sizeof(struct virtio_mem_req) != 24);
 	BUILD_BUG_ON(sizeof(struct virtio_mem_resp) != 10);