virtio-net: fix leaking of ctx array

Fixes: commit d45b897b ("virtio_net: allow specifying context for rx")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/virtio_net.c

@@ -2229,6 +2229,7 @@ static int virtnet_find_vqs(struct virtnet_info *vi)
 	kfree(names);
 	kfree(callbacks);
 	kfree(vqs);
+	kfree(ctx);
 
 	return 0;