leds: Remove duplicated OOM message for individual driver

The OOM message of individual driver is unnecessary, and this is
duplicate the memory subsystem generic OOM message.

Signed-off-by: Xiubo Li <[e-mail]>
Signed-off-by: Bryan Wu <[e-mail]>

drivers/leds/leds-adp5520.c

···
 
 	led = devm_kzalloc(&pdev->dev, sizeof(*led) * pdata->num_leds,
 				GFP_KERNEL);
-	if (led == NULL) {
-		dev_err(&pdev->dev, "failed to alloc memory\n");
+	if (!led)
 		return -ENOMEM;
-	}
 
 	ret = adp5520_led_prepare(pdev);
-
 	if (ret) {
 		dev_err(&pdev->dev, "failed to write\n");
 		return ret;

drivers/leds/leds-bd2802.c

···
 	int ret, i;
 
 	led = devm_kzalloc(&client->dev, sizeof(struct bd2802_led), GFP_KERNEL);
-	if (!led) {
-		dev_err(&client->dev, "failed to allocate driver data\n");
+	if (!led)
 		return -ENOMEM;
-	}
 
 	led->client = client;
 	pdata = led->pdata = dev_get_platdata(&client->dev);

drivers/leds/leds-da903x.c

···
 	}
 
 	led = devm_kzalloc(&pdev->dev, sizeof(struct da903x_led), GFP_KERNEL);
-	if (led == NULL) {
-		dev_err(&pdev->dev, "failed to alloc memory for LED%d\n", id);
+	if (!led)
 		return -ENOMEM;
-	}
 
 	led->cdev.name = pdata->name;
 	led->cdev.default_trigger = pdata->default_trigger;

drivers/leds/leds-da9052.c

···
 	led = devm_kzalloc(&pdev->dev,
 			   sizeof(struct da9052_led) * pled->num_leds,
 			   GFP_KERNEL);
-	if (led == NULL) {
-		dev_err(&pdev->dev, "Failed to alloc memory\n");
+	if (!led) {
 		error = -ENOMEM;
 		goto err;
 	}

drivers/leds/leds-s3c24xx.c

···
 
 	led = devm_kzalloc(&dev->dev, sizeof(struct s3c24xx_gpio_led),
 			   GFP_KERNEL);
-	if (led == NULL) {
-		dev_err(&dev->dev, "No memory for device\n");
+	if (!led)
 		return -ENOMEM;
-	}
 
 	platform_set_drvdata(dev, led);
 

drivers/leds/leds-sunfire.c

···
 	}
 
 	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
-	if (!p) {
-		dev_err(&pdev->dev, "Could not allocate struct sunfire_drvdata\n");
+	if (!p)
 		return -ENOMEM;
-	}
 
 	for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
 		struct led_classdev *lp = &p->leds[i].led_cdev;