io_uring: remove redundant req_set_fail()

req_set_fail() in io_submit_sqe() is redundant, remove it.
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20210827094609.36052-2-haoxu@linux.alibaba.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -6734,7 +6734,6 @@ static int io_submit_sqe(struct io_ring_ctx *ctx, struct io_kiocb *req,
 fail_req:
 		if (link->head) {
 			/* fail even hard links since we don't submit */
-			req_set_fail(link->head);
 			io_req_complete_failed(link->head, -ECANCELED);
 			link->head = NULL;
 		}