nbd: cleanup workqueue on error properly

If we fail to register the blockdev we need to make sure to destroy the
recv workqueue.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index cdbeb30..0bf2b21 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1121,8 +1121,10 @@ static int __init nbd_init(void)
        if (!recv_workqueue)
                return -ENOMEM;
 
-       if (register_blkdev(NBD_MAJOR, "nbd"))
+       if (register_blkdev(NBD_MAJOR, "nbd")) {
+               destroy_workqueue(recv_workqueue);
                return -EIO;
+       }
 
        nbd_dbg_init();