iio: dac: stm32-dac: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Link: https://lore.kernel.org/r/20210928013902.1341-7-caihuoqing@baidu.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c
index 9a6a68b11b2afb9412f217a18ce4e7f809385785..bd7a3b20e645b570417d747306f9d82973511202 100644 (file)
--- a/drivers/iio/dac/stm32-dac-core.c
+++ b/drivers/iio/dac/stm32-dac-core.c
@@ -116,18 +116,12 @@ static int stm32_dac_probe(struct platform_device *pdev)
        priv->common.regmap = regmap;
 
        priv->pclk = devm_clk_get(dev, "pclk");
-       if (IS_ERR(priv->pclk)) {
-               ret = PTR_ERR(priv->pclk);
-               dev_err(dev, "pclk get failed\n");
-               return ret;
-       }
+       if (IS_ERR(priv->pclk))
+               return dev_err_probe(dev, PTR_ERR(priv->pclk), "pclk get failed\n");
 
        priv->vref = devm_regulator_get(dev, "vref");
-       if (IS_ERR(priv->vref)) {
-               ret = PTR_ERR(priv->vref);
-               dev_err(dev, "vref get failed, %d\n", ret);
-               return ret;
-       }
+       if (IS_ERR(priv->vref))
+               return dev_err_probe(dev, PTR_ERR(priv->vref), "vref get failed\n");
 
        pm_runtime_get_noresume(dev);
        pm_runtime_set_active(dev);