mtd: nand: lpc32xx_mlc: Handle return value of clk_prepare_enable.

clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: NArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>

drivers/mtd/nand/lpc32xx_mlc.c

@@ -705,7 +705,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 		res = -ENOENT;
 		goto err_exit1;
 	}
-	clk_prepare_enable(host->clk);
+	res = clk_prepare_enable(host->clk);
+	if (res)
+		goto err_exit1;
 
 	nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl;
 	nand_chip->dev_ready = lpc32xx_nand_device_ready;
@@ -846,9 +848,12 @@ static int lpc32xx_nand_remove(struct platform_device *pdev)
 static int lpc32xx_nand_resume(struct platform_device *pdev)
 {
 	struct lpc32xx_nand_host *host = platform_get_drvdata(pdev);
+	int ret;
 
 	/* Re-enable NAND clock */
-	clk_prepare_enable(host->clk);
+	ret = clk_prepare_enable(host->clk);
+	if (ret)
+		return ret;
 
 	/* Fresh init of NAND controller */
 	lpc32xx_nand_setup(host);