drm/rockchip: analogix_dp: Disable clock when unbinding

The clock is enabled when binding cdn dp.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1491481885-13775-10-git-send-email-jeffy.chen@rock-chips.com

drivers/gpu/drm/rockchip/analogix_dp-rockchip.c

@@ -417,7 +417,8 @@ static void rockchip_dp_unbind(struct device *dev, struct device *master,
 
 	rockchip_drm_psr_unregister(&dp->encoder);
 
-	return analogix_dp_unbind(dev, master, data);
+	analogix_dp_unbind(dev, master, data);
+	clk_disable_unprepare(dp->pclk);
 }
 
 static const struct component_ops rockchip_dp_component_ops = {