io_uring: refactor io_req_add_compl_list()

A small refactoring for io_req_add_compl_list() deduplicating some code.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/f0a5272b45efe4ffc41cb79b99784e39c699aade.1648209006.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -1692,11 +1692,10 @@ static void io_prep_async_link(struct io_kiocb *req)
 
 static inline void io_req_add_compl_list(struct io_kiocb *req)
 {
-	struct io_ring_ctx *ctx = req->ctx;
-	struct io_submit_state *state = &ctx->submit_state;
+	struct io_submit_state *state = &req->ctx->submit_state;
 
 	if (!(req->flags & REQ_F_CQE_SKIP))
-		ctx->submit_state.flush_cqes = true;
+		state->flush_cqes = true;
 	wq_list_add_tail(&req->comp_list, &state->compl_reqs);
 }