nbd: share nbd_put and return by goto put_nbd

Replace the following two statements by the statement “goto put_nbd;”

	nbd_put(nbd);
	return 0;

Signed-off-by: Sun Ke <sunke32@huawei.com>
Suggested-by: Markus Elfring <Markus.Elfring@web.de>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/20210512114331.1233964-3-sunke32@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 974da56..45d2c28 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -2015,12 +2015,11 @@ static int nbd_genl_disconnect(struct sk_buff *skb, struct genl_info *info)
                return -EINVAL;
        }
        mutex_unlock(&nbd_index_mutex);
-       if (!refcount_inc_not_zero(&nbd->config_refs)) {
-               nbd_put(nbd);
-               return 0;
-       }
+       if (!refcount_inc_not_zero(&nbd->config_refs))
+               goto put_nbd;
        nbd_disconnect_and_put(nbd);
        nbd_config_put(nbd);
+put_nbd:
        nbd_put(nbd);
        return 0;
 }