drm/gma500: Remove null check before kfree

kfree on NULL pointer is a no-op and therefore checking is redundant.
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1504099556-3887-1-git-send-email-himanshujha199640@gmail.com

drivers/gpu/drm/gma500/cdv_intel_dp.c

@@ -1901,11 +1901,9 @@ cdv_intel_dp_destroy(struct drm_connector *connector)
 
 	if (is_edp(gma_encoder)) {
 	/*	cdv_intel_panel_destroy_backlight(connector->dev); */
-		if (intel_dp->panel_fixed_mode) {
 		kfree(intel_dp->panel_fixed_mode);
 		intel_dp->panel_fixed_mode = NULL;
 	}
-	}
 	i2c_del_adapter(&intel_dp->adapter);
 	drm_connector_unregister(connector);
 	drm_connector_cleanup(connector);