balloon uses virtio32_to_cpu instead of cpu_to_virtio32
to convert a native endian number to virtio.
No practical difference but makes sparse warn.
Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
  drivers/virtio/virtio_balloon.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index fc7301406540..5d4b891bf84f 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c

@@ -596,7 +596,7 @@ static int send_cmd_id_start(struct virtio_balloon *vb)
  	while (virtqueue_get_buf(vq, &unused))
  		;
  
-	vb->cmd_id_active = virtio32_to_cpu(vb->vdev,
+	vb->cmd_id_active = cpu_to_virtio32(vb->vdev,
  					virtio_balloon_cmd_id_received(vb));
  	sg_init_one(&sg, &vb->cmd_id_active, sizeof(vb->cmd_id_active));
  	err = virtqueue_add_outbuf(vq, &sg, 1, &vb->cmd_id_active, GFP_KERNEL);