drm/bridge: adv7511: clean up CEC adapter when probe fails

When the probe routine fails we also need to clean up the
CEC adapter registered in adv7511_cec_init().

Fixes: 3b1b9750 ("drm: adv7511/33: add HDMI CEC support")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321104705.2804423-1-l.stach@pengutronix.de

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

@@ -1313,6 +1313,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	adv7511_audio_exit(adv7511);
 	drm_bridge_remove(&adv7511->bridge);
 err_unregister_cec:
+	cec_unregister_adapter(adv7511->cec_adap);
 	i2c_unregister_device(adv7511->i2c_cec);
 	clk_disable_unprepare(adv7511->cec_clk);
 err_i2c_unregister_packet: