iio: ssp_sensors: don't manually free devm managed resources

The charme of devm_* functions is that you don't need to care about them
in the error path. In this case it is valid to just return NULL which makes
the device fail to probe and then the two gpios and the allocated memory
are freed automatically by the driver core.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c
index af3aa38f67cda7683b30c2cd82d0b90d28cc1f8d..9e13be2c0cb94a3afe9ffeed3fcff4bf56e14884 100644 (file)
--- a/drivers/iio/common/ssp_sensors/ssp_dev.c
+++ b/drivers/iio/common/ssp_sensors/ssp_dev.c
@@ -462,43 +462,35 @@ static struct ssp_data *ssp_parse_dt(struct device *dev)
 
        data->mcu_ap_gpio = of_get_named_gpio(node, "mcu-ap-gpios", 0);
        if (data->mcu_ap_gpio < 0)
-               goto err_free_pd;
+               return NULL;
 
        data->ap_mcu_gpio = of_get_named_gpio(node, "ap-mcu-gpios", 0);
        if (data->ap_mcu_gpio < 0)
-               goto err_free_pd;
+               return NULL;
 
        data->mcu_reset_gpio = of_get_named_gpio(node, "mcu-reset-gpios", 0);
        if (data->mcu_reset_gpio < 0)
-               goto err_free_pd;
+               return NULL;
 
        ret = devm_gpio_request_one(dev, data->ap_mcu_gpio, GPIOF_OUT_INIT_HIGH,
                                    "ap-mcu-gpios");
        if (ret)
-               goto err_free_pd;
+               return NULL;
 
        ret = devm_gpio_request_one(dev, data->mcu_reset_gpio,
                                    GPIOF_OUT_INIT_HIGH, "mcu-reset-gpios");
        if (ret)
-               goto err_ap_mcu;
+               return NULL;
 
        match = of_match_node(ssp_of_match, node);
        if (!match)
-               goto err_mcu_reset_gpio;
+               return NULL;
 
        data->sensorhub_info = match->data;
 
        dev_set_drvdata(dev, data);
 
        return data;
-
-err_mcu_reset_gpio:
-       devm_gpio_free(dev, data->mcu_reset_gpio);
-err_ap_mcu:
-       devm_gpio_free(dev, data->ap_mcu_gpio);
-err_free_pd:
-       devm_kfree(dev, data);
-       return NULL;
 }
 #else
 static struct ssp_data *ssp_parse_dt(struct device *pdev)