io-wq: remove redundant initialization of variable ret

The variable ret is being initialized with a value that is never read, the
assignment is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210615143424.60449-1-colin.king@canonical.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/io-wq.c

@@ -896,7 +896,7 @@ static int io_wqe_hash_wake(struct wait_queue_entry *wait, unsigned mode,
 
 struct io_wq *io_wq_create(unsigned bounded, struct io_wq_data *data)
 {
-	int ret = -ENOMEM, node;
+	int ret, node;
 	struct io_wq *wq;
 
 	if (WARN_ON_ONCE(!data->free_work || !data->do_work))