drm/exynos: remove duplicated error routine and unnecessary assign

There were duplicated error handling routines during allocating
pages in lowlevel_buffer_allocate() and g2d_userptr_get_dma_addr().
Also unnecessary NULL assignments for variable used not any more
are removed from g2d_userptr_get_dma_addr() and
g2d_userptr_put_dma_addr().

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

2 files changed, 7 insertions, 11 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_buf.c b/drivers/gpu/drm/exynos/exynos_drm_buf.c
index 518b6d8e062b..b8ac06d92fbf 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_buf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_buf.c
@@ -68,8 +68,8 @@ static int lowlevel_buffer_allocate(struct drm_device *dev,
                                         &buf->dma_attrs);
                 if (!buf->kvaddr) {
                         DRM_ERROR("failed to allocate buffer.\n");
-                        drm_free_large(buf->pages);
-                        return -ENOMEM;
+                        ret = -ENOMEM;
+                        goto err_free;
                 }
 
                 start_addr = buf->dma_addr;
@@ -106,7 +106,7 @@ err_free_attrs:
         dma_free_attrs(dev->dev, buf->size, buf->pages,
                         (dma_addr_t)buf->dma_addr, &buf->dma_attrs);
         buf->dma_addr = (dma_addr_t)NULL;
-
+err_free:
         if (!is_drm_iommu_supported(dev))
                 drm_free_large(buf->pages);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index fb19ee53ecbb..42a5a5466075 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -388,12 +388,9 @@ out:
 
         sg_free_table(g2d_userptr->sgt);
         kfree(g2d_userptr->sgt);
-        g2d_userptr->sgt = NULL;
 
         drm_free_large(g2d_userptr->pages);
-        g2d_userptr->pages = NULL;
         kfree(g2d_userptr);
-        g2d_userptr = NULL;
 }
 
 static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
@@ -466,8 +463,8 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
         pages = drm_calloc_large(npages, sizeof(struct page *));
         if (!pages) {
                 DRM_ERROR("failed to allocate pages.\n");
-                kfree(g2d_userptr);
-                return ERR_PTR(-ENOMEM);
+                ret = -ENOMEM;
+                goto err_free;
         }
 
         vma = find_vma(current->mm, userptr);
@@ -543,7 +540,6 @@ err_sg_free_table:
 
 err_free_sgt:
         kfree(sgt);
-        sgt = NULL;
 
 err_free_userptr:
         exynos_gem_put_pages_to_userptr(g2d_userptr->pages,
@@ -555,9 +551,9 @@ err_put_vma:
 
 err_free_pages:
         drm_free_large(pages);
+
+err_free:
         kfree(g2d_userptr);
-        pages = NULL;
-        g2d_userptr = NULL;
 
         return ERR_PTR(ret);
 }