io_uring: don't forget cflags in io_recv()

Instead of returning error from io_recv(), go through generic cleanup
path, because it'll retain cflags for userspace. Do the same for
io_send() for consistency.
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>

fs/io_uring.c

@@ -3976,7 +3976,7 @@ static int io_send(struct io_kiocb *req, bool force_nonblock,
 
 	ret = import_single_range(WRITE, sr->buf, sr->len, &iov, &msg.msg_iter);
 	if (unlikely(ret))
-		return ret;
+		return ret;;
 
 	msg.msg_name = NULL;
 	msg.msg_control = NULL;
@@ -4232,10 +4232,8 @@ static int io_recv(struct io_kiocb *req, bool force_nonblock,
 		buf = u64_to_user_ptr(kbuf->addr);
 
 	ret = import_single_range(READ, buf, sr->len, &iov, &msg.msg_iter);
-	if (unlikely(ret)) {
-		kfree(kbuf);
-		return ret;
-	}
+	if (unlikely(ret))
+		goto out_free;
 
 	req->flags |= REQ_F_NEED_CLEANUP;
 	msg.msg_name = NULL;
@@ -4256,7 +4254,7 @@ static int io_recv(struct io_kiocb *req, bool force_nonblock,
 		return -EAGAIN;
 	if (ret == -ERESTARTSYS)
 		ret = -EINTR;
-
+out_free:
 	kfree(kbuf);
 	req->flags &= ~REQ_F_NEED_CLEANUP;
 	if (ret < 0)