drm/nouveau: Unset the EDID connector property when the EDID block goes away.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -239,8 +239,12 @@ nouveau_connector_detect(struct drm_connector *connector)
 		return connector_status_connected;
 	}
 
+	/* Cleanup the previous EDID block. */
+	if (nv_connector->edid) {
+		drm_mode_connector_update_edid_property(connector, NULL);
 		kfree(nv_connector->edid);
 		nv_connector->edid = NULL;
+	}
 
 	i2c = nouveau_connector_ddc_detect(connector, &nv_encoder);
 	if (i2c) {