[PATCH v2 1/2] iio: adc: sun4i-gpadc-iio: Fix PM disable depth imbalance in sun4i_gpadc_probe()

[Zhang Qilong <zhangqilong3@huawei.com>]

The pm_runtime_enable will increase power disable depth.
Thus a pairing decrement is needed on the error handling
path to keep it balanced according to context. In addtion,
the iio_map_array path has potentially been called.

We fix it by gotoing err_map when thermal_zone register
failed.

Fixes: b0a242894f11 ("iio: adc: sun4i-gpadc-iio: register in the thermal after registering in pm")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
---
v2:
- revert iio_map_array if it's necessary when thermal_zone
  register failed.
---
 drivers/iio/adc/sun4i-gpadc-iio.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index a6ade70dedf8..d2535dd28af8 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -648,7 +648,8 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"could not register thermal sensor: %ld\n",
 				PTR_ERR(info->tzd));
-			return PTR_ERR(info->tzd);
+			ret = PTR_ERR(info->tzd);
+			goto err_map;
 		}
 	}
 
-- 
2.25.1