i2c: emev2: 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: NWolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-emev2.c

@@ -375,7 +375,9 @@ static int em_i2c_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->sclk))
 		return PTR_ERR(priv->sclk);
 
-	clk_prepare_enable(priv->sclk);
+	ret = clk_prepare_enable(priv->sclk);
+	if (ret)
+		return ret;
 
 	priv->adap.timeout = msecs_to_jiffies(100);
 	priv->adap.retries = 5;