io_uring: local variable rw shadows outer variable in io_write

This fixes the shadowing of the outer variable rw in the function
io_write(). No issue is caused by this, but let's silence the shadowing
warning anyway.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Stefan Roesch <shr@devkernel.io>
Link: https://lore.kernel.org/r/20221010234330.244244-1-shr@devkernel.ioSigned-off-by: Jens Axboe <axboe@kernel.dk>

io_uring/rw.c

@@ -916,7 +916,7 @@ int io_write(struct io_kiocb *req, unsigned int issue_flags)
 			goto copy_iov;
 
 		if (ret2 != req->cqe.res && ret2 >= 0 && need_complete_io(req)) {
-			struct io_async_rw *rw;
+			struct io_async_rw *io;
 
 			trace_io_uring_short_write(req->ctx, kiocb->ki_pos - ret2,
 						req->cqe.res, ret2);
@@ -929,9 +929,9 @@ int io_write(struct io_kiocb *req, unsigned int issue_flags)
 			iov_iter_save_state(&s->iter, &s->iter_state);
 			ret = io_setup_async_rw(req, iovec, s, true);
 
-			rw = req->async_data;
-			if (rw)
-				rw->bytes_done += ret2;
+			io = req->async_data;
+			if (io)
+				io->bytes_done += ret2;
 
 			if (kiocb->ki_flags & IOCB_WRITE)
 				kiocb_end_write(req);