loop: Remove duplicate assignments

The assignment and operation there will be overwritten later, so
it should be deleted.

The clang_analyzer complains as follows:

drivers/block/loop.c:2330:2 warning:

Value stored to 'err' is never read

change in v2:

Repair the sending email box

Reported-by: Zeal Robot <[email protected]>
Signed-off-by: luo penghao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>

Author: luo penghao

drivers/block/loop.c

@@ -2003,7 +2003,6 @@ static int loop_add(int i)
 		goto out_free_dev;
 	i = err;
 
-	err = -ENOMEM;
 	lo->tag_set.ops = &loop_mq_ops;
 	lo->tag_set.nr_hw_queues = 1;
 	lo->tag_set.queue_depth = 128;