gpio: max7301: use devm_kzalloc()

Use devm_kzalloc() to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-max7301.c

@@ -61,7 +61,7 @@ static int max7301_probe(struct spi_device *spi)
 	if (ret < 0)
 		return ret;
 
-	ts = kzalloc(sizeof(struct max7301), GFP_KERNEL);
+	ts = devm_kzalloc(&spi->dev, sizeof(struct max7301), GFP_KERNEL);
 	if (!ts)
 		return -ENOMEM;
 
@@ -70,8 +70,6 @@ static int max7301_probe(struct spi_device *spi)
 	ts->dev = &spi->dev;
 
 	ret = __max730x_probe(ts);
-	if (ret)
-		kfree(ts);
 	return ret;
 }