iio: adc: stm32-dfsdm: missing error case during probe

During probe, check the devm_ioremap_resource() error value.
Also return the devm_clk_get() error value instead of -EINVAL.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c
index 0a4d3746d21c34b0cd3a23b1f4fca8653e7168e9..26e2011c5868906e596d942099eea50f0c9a2ef0 100644 (file)
--- a/drivers/iio/adc/stm32-dfsdm-core.c
+++ b/drivers/iio/adc/stm32-dfsdm-core.c
@@ -233,6 +233,8 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev,
        }
        priv->dfsdm.phys_base = res->start;
        priv->dfsdm.base = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(priv->dfsdm.base))
+               return PTR_ERR(priv->dfsdm.base);
 
        /*
         * "dfsdm" clock is mandatory for DFSDM peripheral clocking.
@@ -242,8 +244,10 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev,
         */
        priv->clk = devm_clk_get(&pdev->dev, "dfsdm");
        if (IS_ERR(priv->clk)) {
-               dev_err(&pdev->dev, "No stm32_dfsdm_clk clock found\n");
-               return -EINVAL;
+               ret = PTR_ERR(priv->clk);
+               if (ret != -EPROBE_DEFER)
+                       dev_err(&pdev->dev, "Failed to get clock (%d)\n", ret);
+               return ret;
        }
 
        priv->aclk = devm_clk_get(&pdev->dev, "audio");