io_uring: remove excessive unlikely on IS_ERR

The IS_ERR function uses the IS_ERR_VALUE macro under the hood which
already wraps the condition into unlikely.

Signed-off-by: Dmitrii Bundin <dmitrii.bundin.a@gmail.com>
Link: https://lore.kernel.org/r/20230109185854.25698-1-dmitrii.bundin.a@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

io_uring/rw.c

@@ -410,7 +410,7 @@ static inline int io_import_iovec(int rw, struct io_kiocb *req,
 				  unsigned int issue_flags)
 {
 	*iovec = __io_import_iovec(rw, req, s, issue_flags);
-	if (unlikely(IS_ERR(*iovec)))
+	if (IS_ERR(*iovec))
 		return PTR_ERR(*iovec);
 
 	iov_iter_save_state(&s->iter, &s->iter_state);