io_uring: revert "io_uring fix multishot accept ordering"

From: Dylan Yudaken <dylany@meta.com>

[ upstream commit 515e269 ]

This is no longer needed after commit aa1df3a ("io_uring: fix CQE
reordering"), since all reordering is now taken care of.

This reverts commit cbd2574 ("io_uring: fix multishot accept
ordering").

Signed-off-by: Dylan Yudaken <dylany@meta.com>
Link: https://lore.kernel.org/r/20221107125236.260132-2-dylany@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

io_uring/net.c

@@ -1337,12 +1337,12 @@ int io_accept(struct io_kiocb *req, unsigned int issue_flags)
 		return IOU_OK;
 	}
 
-	if (ret >= 0 &&
-	    io_post_aux_cqe(ctx, req->cqe.user_data, ret, IORING_CQE_F_MORE, false))
+	if (ret < 0)
+		return ret;
+	if (io_post_aux_cqe(ctx, req->cqe.user_data, ret, IORING_CQE_F_MORE, true))
 		goto retry;
 
-	io_req_set_res(req, ret, 0);
-	return (issue_flags & IO_URING_F_MULTISHOT) ? IOU_STOP_MULTISHOT : IOU_OK;
+	return -ECANCELED;
 }
 
 int io_socket_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)