ata: pata_imx: Check the return value from clk_prepare_enable()

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

drivers/ata/pata_imx.c

@@ -119,7 +119,9 @@ static int pata_imx_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->clk);
 	}
 
-	clk_prepare_enable(priv->clk);
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
 
 	host = ata_host_alloc(&pdev->dev, 1);
 	if (!host) {
@@ -212,7 +214,9 @@ static int pata_imx_resume(struct device *dev)
 	struct ata_host *host = dev_get_drvdata(dev);
 	struct pata_imx_priv *priv = host->private_data;
 
-	clk_prepare_enable(priv->clk);
+	int ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
 
 	__raw_writel(priv->ata_ctl, priv->host_regs + PATA_IMX_ATA_CONTROL);