extcon: adc-jack: Release IIO channel on driver remove

Release IIO channel acquired during driver probe.
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>

drivers/extcon/extcon-adc-jack.c

@@ -173,6 +173,7 @@ static int adc_jack_remove(struct platform_device *pdev)
 
 	free_irq(data->irq, data);
 	cancel_work_sync(&data->handler.work);
+	iio_channel_release(data->chan);
 
 	return 0;
 }