drm/i915/hdmi, dp: Do not dereference the encoder in the connector destroy

Oops, apparently intel_hdmi/intel_dp is the encoder - an object with a
distinct lifetime to the connector, and so we cannot simply reuse the
common function to unset and free the edid.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_dp.c

@@ -4395,7 +4395,7 @@ intel_dp_connector_destroy(struct drm_connector *connector)
 {
 	struct intel_connector *intel_connector = to_intel_connector(connector);
 
-	intel_dp_unset_edid(intel_attached_dp(connector));
+	kfree(intel_connector->detect_edid);
 
 	if (!IS_ERR_OR_NULL(intel_connector->edid))
 		kfree(intel_connector->edid);

drivers/gpu/drm/i915/intel_hdmi.c

@@ -1501,7 +1501,7 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder)
 
 static void intel_hdmi_destroy(struct drm_connector *connector)
 {
-	intel_hdmi_unset_edid(connector);
+	kfree(to_intel_connector(connector)->detect_edid);
 	drm_connector_cleanup(connector);
 	kfree(connector);
 }