backlight: l4f00242t03: fix error handling in l4f00242t03_probe

Error handling fixes:
1. In the case of kzalloc failure, simple return -ENOMEM instead of goto
   err. ( priv is NULL in this case )
2. In the case of gpio_request fail for reset_gpio and data_enable_gpio,
   properly release resources by goto err and err2 respectively.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index 1dafec85ddc0..9093ef0fa869 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -125,8 +125,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
 
         if (priv == NULL) {
                 dev_err(&spi->dev, "No memory for this device.\n");
-                ret = -ENOMEM;
-                goto err;
+                return -ENOMEM;
         }
 
         dev_set_drvdata(&spi->dev, priv);
@@ -139,7 +138,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
         if (ret) {
                 dev_err(&spi->dev,
                         "Unable to get the lcd l4f00242t03 reset gpio.\n");
-                return ret;
+                goto err;
         }
 
         ret = gpio_direction_output(pdata->reset_gpio, 1);
@@ -151,7 +150,7 @@ static int __devinit l4f00242t03_probe(struct spi_device *spi)
         if (ret) {
                 dev_err(&spi->dev,
                         "Unable to get the lcd l4f00242t03 data en gpio.\n");
-                return ret;
+                goto err2;
         }
 
         ret = gpio_direction_output(pdata->data_enable_gpio, 0);