[PATCH] iio: adc: gyroadc: fix leak of device node iterator

[Tobias Jordan]

Add missing of_node_put calls for the error paths of the
for_each_child_of_node loop in rcar_gyroadc_parse_subdevs.

Thought about adding an "goto err_of_node_put" instead, but as the error
paths are quite divergent, I'm not sure if that wouldn't complicate
things.

Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver")
Signed-off-by: Tobias Jordan <ker...@cdqe.de>
---
 drivers/iio/adc/rcar-gyroadc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c
index dcaefc108ff6..3746b0276b80 100644
--- a/drivers/iio/adc/rcar-gyroadc.c
+++ b/drivers/iio/adc/rcar-gyroadc.c
@@ -357,6 +357,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev 
*indio_dev)
                        num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3);
                        break;
                default:
+                       of_node_put(child);
                        return -EINVAL;
                }
 
@@ -374,6 +375,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev 
*indio_dev)
                                dev_err(dev,
                                        "Failed to get child reg property of 
ADC \"%pOFn\".\n",
                                        child);
+                               of_node_put(child);
                                return ret;
                        }
 
@@ -382,6 +384,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev 
*indio_dev)
                                dev_err(dev,
                                        "Only %i channels supported with %pOFn, 
but reg = <%i>.\n",
                                        num_channels, child, reg);
+                               of_node_put(child);
                                return -EINVAL;
                        }
                }
@@ -391,6 +394,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev 
*indio_dev)
                        dev_err(dev,
                                "Channel %i uses different ADC mode than the 
rest.\n",
                                reg);
+                       of_node_put(child);
                        return -EINVAL;
                }
 
@@ -401,6 +405,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev 
*indio_dev)
                if (IS_ERR(vref)) {
                        dev_dbg(dev, "Channel %i 'vref' supply not 
connected.\n",
                                reg);
+                       of_node_put(child);
                        return PTR_ERR(vref);
                }
 
-- 
2.20.1