drm/exynos: fixed wrong err ptr usage and destroy call in exeception

- exynos_drm_buf_create() returns err pointer so NULL check is wrong.
- Case that exynos_gem_obj is not created, destroy call in exception
  handle lable uses this pointer. so instead buffer is directly used.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index b1b94b1..aba0fe4 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -128,30 +128,25 @@ struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev,
 
        struct exynos_drm_gem_obj *exynos_gem_obj = NULL;
        struct exynos_drm_gem_buf *buffer;
-       int ret;
 
        size = roundup(size, PAGE_SIZE);
 
        DRM_DEBUG_KMS("%s: size = 0x%lx\n", __FILE__, size);
 
        buffer = exynos_drm_buf_create(dev, size);
-       if (!buffer)
-               return ERR_PTR(-ENOMEM);
+       if (IS_ERR(buffer)) {
+               return ERR_CAST(buffer);
+       }
 
        exynos_gem_obj = exynos_drm_gem_init(dev, file_priv, handle, size);
        if (IS_ERR(exynos_gem_obj)) {
-               ret = PTR_ERR(exynos_gem_obj);
-               goto err_gem_init;
+               exynos_drm_buf_destroy(dev, buffer);
+               return exynos_gem_obj;
        }
 
        exynos_gem_obj->buffer = buffer;
 
        return exynos_gem_obj;
-
-err_gem_init:
-       exynos_drm_buf_destroy(dev, exynos_gem_obj->buffer);
-
-       return ERR_PTR(ret);
 }
 
 int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,