leds: convert DAC124S085 LED driver to devm_kzalloc()

Cc: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
diff --git a/drivers/leds/leds-dac124s085.c b/drivers/leds/leds-dac124s085.c
index d56c142..1f9d8e6 100644
--- a/drivers/leds/leds-dac124s085.c
+++ b/drivers/leds/leds-dac124s085.c
@@ -69,7 +69,7 @@
 	struct dac124s085_led	*led;
 	int i, ret;
 
-	dac = kzalloc(sizeof(*dac), GFP_KERNEL);
+	dac = devm_kzalloc(&spi->dev, sizeof(*dac), GFP_KERNEL);
 	if (!dac)
 		return -ENOMEM;
 
@@ -102,7 +102,6 @@
 		led_classdev_unregister(&dac->leds[i].ldev);
 
 	spi_set_drvdata(spi, NULL);
-	kfree(dac);
 	return ret;
 }
 
@@ -117,7 +116,6 @@
 	}
 
 	spi_set_drvdata(spi, NULL);
-	kfree(dac);
 
 	return 0;
 }