drm/i915: Fix regression in 95ca9d

i915_gem_cleanup_hws(struct drm_device *dev)

{

	drm_i915_private_t *dev_priv = dev->dev_private;

	struct drm_gem_object *obj = dev_priv->hws_obj;

	struct drm_i915_gem_object *obj_priv = obj->driver_private;

	struct drm_gem_object *obj;

	struct drm_i915_gem_object *obj_priv;

	if (dev_priv->hws_obj == NULL)

		return;

	obj = dev_priv->hws_obj;

	obj_priv = obj->driver_private;

	kunmap(obj_priv->page_list[0]);

	i915_gem_object_unpin(obj);

	drm_gem_object_unreference(obj);

	dev_priv->hws_obj = NULL;

	memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));

	dev_priv->hw_status_page = NULL;