[PATCH] extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'

[Christophe JAILLET]

In some error handling paths, a call to 'iio_channel_get()' is not balanced
by a corresponding call to 'iio_channel_release()'.

This can be achieved easily by using the devm_ variant of
'iio_channel_get()'.

This has the extra benefit to simplify the remove function.

Fixes: 19939860dcae ("extcon: adc_jack: adc-jack driver to support 3.5 pi or 
simliar devices")
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
This patch in a more complete version than commit 5a696d9760fe
("extcon: adc-jack: Release IIO channel on driver remove") which fixed the
issue for the remove function only.
---
 drivers/extcon/extcon-adc-jack.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index ad02dc6747a4..0317b614b680 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -124,7 +124,7 @@ static int adc_jack_probe(struct platform_device *pdev)
        for (i = 0; data->adc_conditions[i].id != EXTCON_NONE; i++);
        data->num_conditions = i;
 
-       data->chan = iio_channel_get(&pdev->dev, pdata->consumer_channel);
+       data->chan = devm_iio_channel_get(&pdev->dev, pdata->consumer_channel);
        if (IS_ERR(data->chan))
                return PTR_ERR(data->chan);
 
@@ -164,7 +164,6 @@ 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;
 }
-- 
2.25.1