drm/bridge: anx7625: Fix release wrong workqueue

If "hdcp_workqueue" exist, must release "hdcp_workqueue",
not "workqueue".

Fixes: cd1637c7 ("drm/bridge: anx7625: add HDCP support")
Signed-off-by: Xin Ji <xji@analogixsemi.com>
Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220217024418.3780171-1-xji@analogixsemi.com

drivers/gpu/drm/bridge/analogix/anx7625.c

@@ -2736,8 +2736,8 @@ static int anx7625_i2c_remove(struct i2c_client *client)
 
 	if (platform->hdcp_workqueue) {
 		cancel_delayed_work(&platform->hdcp_work);
-		flush_workqueue(platform->workqueue);
-		destroy_workqueue(platform->workqueue);
+		flush_workqueue(platform->hdcp_workqueue);
+		destroy_workqueue(platform->hdcp_workqueue);
 	}
 
 	if (!platform->pdata.low_power_mode)