iio: dac: mcp4728: rename err to ret in probe function

To prepare for using a function that returns a non-error value, rename
the variable 'err' to 'ret' in the probe function.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20240712-iio-regulator-refactor-round-3-v1-1-835017bae43d@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/dac/mcp4728.c b/drivers/iio/dac/mcp4728.c
index c449ca9..300985b 100644 (file)
--- a/drivers/iio/dac/mcp4728.c
+++ b/drivers/iio/dac/mcp4728.c
@@ -540,7 +540,7 @@ static int mcp4728_probe(struct i2c_client *client)
        const struct i2c_device_id *id = i2c_client_get_device_id(client);
        struct mcp4728_data *data;
        struct iio_dev *indio_dev;
-       int err;
+       int ret;
 
        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
        if (!indio_dev)
@@ -554,14 +554,14 @@ static int mcp4728_probe(struct i2c_client *client)
        if (IS_ERR(data->vdd_reg))
                return PTR_ERR(data->vdd_reg);
 
-       err = regulator_enable(data->vdd_reg);
-       if (err)
-               return err;
+       ret = regulator_enable(data->vdd_reg);
+       if (ret)
+               return ret;
 
-       err = devm_add_action_or_reset(&client->dev, mcp4728_reg_disable,
+       ret = devm_add_action_or_reset(&client->dev, mcp4728_reg_disable,
                                       data->vdd_reg);
-       if (err)
-               return err;
+       if (ret)
+               return ret;
 
        /*
         * MCP4728 has internal EEPROM that save each channel boot
@@ -569,15 +569,15 @@ static int mcp4728_probe(struct i2c_client *client)
         * driver at kernel boot. mcp4728_init_channels_data() reads back DAC
         * settings and stores them in data structure.
         */
-       err = mcp4728_init_channels_data(data);
-       if (err) {
-               return dev_err_probe(&client->dev, err,
+       ret = mcp4728_init_channels_data(data);
+       if (ret) {
+               return dev_err_probe(&client->dev, ret,
                        "failed to read mcp4728 current configuration\n");
        }
 
-       err = mcp4728_init_scales_avail(data);
-       if (err) {
-               return dev_err_probe(&client->dev, err,
+       ret = mcp4728_init_scales_avail(data);
+       if (ret) {
+               return dev_err_probe(&client->dev, ret,
                                     "failed to init scales\n");
        }