mmc: sdhci-dove: remove the unneeded error check

The function clk_disable_unprepare() already take care of either error
or null cases.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-dove.c

@@ -117,8 +117,7 @@ static int sdhci_dove_probe(struct platform_device *pdev)
 	return 0;
 
 err_sdhci_add:
-	if (!IS_ERR(priv->clk))
-		clk_disable_unprepare(priv->clk);
+	clk_disable_unprepare(priv->clk);
 	sdhci_pltfm_free(pdev);
 	return ret;
 }
@@ -131,8 +130,7 @@ static int sdhci_dove_remove(struct platform_device *pdev)
 
 	sdhci_pltfm_unregister(pdev);
 
-	if (!IS_ERR(priv->clk))
-		clk_disable_unprepare(priv->clk);
+	clk_disable_unprepare(priv->clk);
 
 	return 0;
 }