[PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init

[Miaoqian Lin]

of_find_device_by_node() takes a reference to the embedded struct device,
we should use put_device() to release it when not need anymore.
Add missing put_device() in error path to avoid refcount leak.

Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge 
DRM_BRIDGE_ATTACH_NO_CONNECTOR")
Signed-off-by: Miaoqian Lin <linmq...@gmail.com>
---
 drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c 
b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index 5e306de6f485..de87f02cd388 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -435,8 +435,10 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
                cec_fill_conn_info_from_drm(&conn_info, 
meson_encoder_hdmi->connector);
 
                notifier = cec_notifier_conn_register(&pdev->dev, NULL, 
&conn_info);
-               if (!notifier)
+               if (!notifier) {
+                       put_device(&pdev->dev);
                        return -ENOMEM;
+               }
 
                meson_encoder_hdmi->cec_notifier = notifier;
        }
-- 
2.25.1