[PATCH v2 1/2] drm/bridge: anx7625: Fix refcount bug in anx7625_parse_dt()

[Liang He]

In anx7625_parse_dt(), 'pdata->mipi_host_node' will be assigned a
new reference with of_graph_get_remote_node() which will increase
the refcount of the object, correspondingly, we should call
of_node_put() for the old reference stored in the 'pdata->mipi_host_node'.

Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP")
Signed-off-by: Liang He <windhl at 126.com>
---
 changelog:

 v2: (1) rebase with drm-misc-next advised by Robert Foss
     (2) use proper title
     (3) remove the v1's second bug ('ep0'), fixed recently
 v1: https://lore.kernel.org/all/20220707012330.305646-1-windhl@126.com/ 

 drivers/gpu/drm/bridge/analogix/anx7625.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index d1f1d525aeb6..79fc7a50b497 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1642,6 +1642,7 @@ static int anx7625_parse_dt(struct device *dev,
 	anx7625_get_swing_setting(dev, pdata);
 
 	pdata->is_dpi = 0; /* default dsi mode */
+	of_node_put(pdata->mipi_host_node);
 	pdata->mipi_host_node = of_graph_get_remote_node(np, 0, 0);
 	if (!pdata->mipi_host_node) {
 		DRM_DEV_ERROR(dev, "fail to get internal panel.\n");
-- 
2.25.1