null_blk: remove an unused variable assignment in null_add_dev

Fix up the recent blk_alloc_disk conversion.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210614060231.3965278-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c
index 3b320b0..d734e9e 100644 (file)
--- a/drivers/block/null_blk/main.c
+++ b/drivers/block/null_blk/main.c
@@ -1849,7 +1849,6 @@ static int null_add_dev(struct nullb_device *dev)
                if (!null_setup_fault())
                        goto out_cleanup_tags;
 
-               rv = -ENOMEM;
                nullb->tag_set->timeout = 5 * HZ;
                nullb->disk = blk_mq_alloc_disk(nullb->tag_set, nullb);
                if (IS_ERR(nullb->disk)) {