[PATCH] gpu: lontium-lt9611: Fix NULL pointer dereference in lt9611_connector_init()

[Zeng Jingxiang]

From: Zeng Jingxiang <linusz...@tencent.com>

A NULL check for bridge->encoder shows that it may be NULL, but it
already been dereferenced on all paths leading to the check.
812     if (!bridge->encoder) {

Dereference the pointer bridge->encoder.
810     drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);

Signed-off-by: Zeng Jingxiang <linusz...@tencent.com>
---
 drivers/gpu/drm/bridge/lontium-lt9611.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c 
b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 7ef8fe5abc12..81a4751573fa 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -807,13 +807,14 @@ static int lt9611_connector_init(struct drm_bridge 
*bridge, struct lt9611 *lt961
 
        drm_connector_helper_add(&lt9611->connector,
                                 &lt9611_bridge_connector_helper_funcs);
-       drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);
 
        if (!bridge->encoder) {
                DRM_ERROR("Parent encoder object not found");
                return -ENODEV;
        }
 
+       drm_connector_attach_encoder(&lt9611->connector, bridge->encoder);
+
        return 0;
 }
 
-- 
2.27.0