io_uring: remove unnecessary NULL checks

to #26323588

commit 297a31e3e8318f533cff4fe33ffaefb74f72c6e2 upstream.

The "kmsg" pointer can't be NULL and we have already dereferenced it so
a check here would be useless.
Reviewed-by: NStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>

fs/io_uring.c

@@ -3072,7 +3072,7 @@ static int io_sendmsg(struct io_kiocb *req, struct io_kiocb **nxt,
 			if (req->io)
 				return -EAGAIN;
 			if (io_alloc_async_ctx(req)) {
-				if (kmsg && kmsg->iov != kmsg->fast_iov)
+				if (kmsg->iov != kmsg->fast_iov)
 					kfree(kmsg->iov);
 				return -ENOMEM;
 			}
@@ -3226,7 +3226,7 @@ static int io_recvmsg(struct io_kiocb *req, struct io_kiocb **nxt,
 			if (req->io)
 				return -EAGAIN;
 			if (io_alloc_async_ctx(req)) {
-				if (kmsg && kmsg->iov != kmsg->fast_iov)
+				if (kmsg->iov != kmsg->fast_iov)
 					kfree(kmsg->iov);
 				return -ENOMEM;
 			}