leds: Fix potential leds-gpio oops

Call gpio_cansleep only after gpio_request succeeded avoiding an
oops.
Signed-off-by: NUwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>

drivers/leds/leds-gpio.c

@@ -79,6 +79,10 @@ static int gpio_led_probe(struct platform_device *pdev)
 		cur_led = &pdata->leds[i];
 		led_dat = &leds_data[i];
 
+		ret = gpio_request(cur_led->gpio, cur_led->name);
+		if (ret < 0)
+			goto err;
+
 		led_dat->cdev.name = cur_led->name;
 		led_dat->cdev.default_trigger = cur_led->default_trigger;
 		led_dat->gpio = cur_led->gpio;
@@ -87,10 +91,6 @@ static int gpio_led_probe(struct platform_device *pdev)
 		led_dat->cdev.brightness_set = gpio_led_set;
 		led_dat->cdev.brightness = LED_OFF;
 
-		ret = gpio_request(led_dat->gpio, led_dat->cdev.name);
-		if (ret < 0)
-			goto err;
-
 		gpio_direction_output(led_dat->gpio, led_dat->active_low);
 
 		INIT_WORK(&led_dat->work, gpio_led_work);