drm/nouveau/i2c: fix some blatant abuse

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/core/subdev/i2c/base.c

@@ -494,8 +494,8 @@ nouveau_i2c_create_port(struct nouveau_i2c *i2c, int index, u8 type,
 		oclass = impl->pad_x;
 	}
 
-	ret = nouveau_object_ctor(NULL, nv_object(i2c), oclass, NULL, pad,
-				 &parent);
+	ret = nouveau_object_ctor(nv_object(i2c), nv_object(i2c), oclass,
+				  NULL, pad, &parent);
 	if (ret < 0)
 		return;
 

drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h

@@ -14,7 +14,7 @@ static inline struct nvkm_i2c_pad *
 nvkm_i2c_pad(struct nouveau_i2c_port *port)
 {
 	struct nouveau_object *pad = nv_object(port);
-	while (pad->parent)
+	while (!nv_iclass(pad->parent, NV_SUBDEV_CLASS))
 		pad = pad->parent;
 	return (void *)pad;
 }