iio: adc: twl4030: Return an error if we can not enable the vusb3v1 regulator in 'twl4030_madc_probe()'

If we can not enable the regulator, go through the error handling path
instead of silently continuing.

Fixes: 7cc97d77ee8a ("iio: adc: twl4030: Fix ADC[3:6] readings")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 0c86fbb3033e..28df096e84ec 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -893,8 +893,10 @@ static int twl4030_madc_probe(struct platform_device *pdev)
         }
 
         ret = regulator_enable(madc->usb3v1);
-        if (ret)
+        if (ret) {
                 dev_err(madc->dev, "could not enable 3v1 bias regulator\n");
+                goto err_i2c;
+        }
 
         ret = iio_device_register(iio_dev);
         if (ret) {