[PATCH] drm/ingenic: fix error code in ingenic_drm_gem_create_object()

The ->gem_create_object() function pointers are supposed to return NULL
on error.  This function returns an error pointer but none of the
callers expect that so it will lead to an Oops.  See drm_gem_vram_create()
for example of it checks for NULL but an error pointer would lead to a
crash.

Fixes: 4a791cb6d34f ("drm/ingenic: Add option to alloc cached GEM buffers")
Signed-off-by: Dan Carpenter <redacted>
---
  drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index a5df1c8d34cd..eb7266a0b037 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c

@@ -757,7 +757,7 @@ ingenic_drm_gem_create_object(struct drm_device *drm, size_t size)
  
  	obj = kzalloc(sizeof(*obj), GFP_KERNEL);
  	if (!obj)
-		return ERR_PTR(-ENOMEM);
+		return NULL;
  
  	obj->map_noncoherent = priv->soc_info->map_noncoherent;