[PATCH next] drm/plane: Fix error pointer vs NULL bug in create_in_format_blob()

[Dan Carpenter]

The callers expect to receive error pointers on error but
create_in_format_blob() returns NULL.  Change it to return error
pointers.

Fixes: 0d6dcd741c26 ("drm/plane: modify create_in_formats to acommodate async")
Signed-off-by: Dan Carpenter <dan.carpen...@linaro.org>
---
 drivers/gpu/drm/drm_plane.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 04992dfd4c79..75a7e8aa6611 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -209,7 +209,7 @@ static struct drm_property_blob 
*create_in_format_blob(struct drm_device *dev,
        formats_size = sizeof(__u32) * plane->format_count;
        if (WARN_ON(!formats_size)) {
                /* 0 formats are never expected */
-               return 0;
+               return ERR_PTR(-EINVAL);
        }
 
        modifiers_size =
@@ -225,7 +225,7 @@ static struct drm_property_blob 
*create_in_format_blob(struct drm_device *dev,
 
        blob = drm_property_create_blob(dev, blob_size, NULL);
        if (IS_ERR(blob))
-               return NULL;
+               return blob;
 
        blob_data = blob->data;
        blob_data->version = FORMAT_BLOB_CURRENT;
-- 
2.47.2