mfd: Fix jz4740-adc resource reclaim in probe error path

If mfd_add_devices() fail, we need to relese allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c
index 7a844aef5dcf..b30e44ac4d1c 100644
--- a/drivers/mfd/jz4740-adc.c
+++ b/drivers/mfd/jz4740-adc.c
@@ -322,9 +322,15 @@ static int __devinit jz4740_adc_probe(struct platform_device *pdev)
         writeb(0x00, adc->base + JZ_REG_ADC_ENABLE);
         writeb(0xff, adc->base + JZ_REG_ADC_CTRL);
 
-        return mfd_add_devices(&pdev->dev, 0, jz4740_adc_cells,
+        ret = mfd_add_devices(&pdev->dev, 0, jz4740_adc_cells,
                 ARRAY_SIZE(jz4740_adc_cells), mem_base, adc->irq_base);
+        if (ret < 0)
+                goto err_clk_put;
 
+        return 0;
+
+err_clk_put:
+        clk_put(adc->clk);
 err_iounmap:
         platform_set_drvdata(pdev, NULL);
         iounmap(adc->base);