[PATCH] drm/bridge: imx8mp-hdmi-pvi: Fix next_bridge reference leak

[Wentao Liang <vulab@iscas.ac.cn>]

imx8mp_hdmi_pvi_probe() takes a reference to the next bridge in the
pipeline with of_drm_find_and_get_bridge() and stores it in
pvi->bridge.next_bridge, but the reference is never released, leaking
the bridge on driver unbind.  Drop the reference in
imx8mp_hdmi_pvi_remove() once the bridge has been unregistered.

Fixes: 7654c807f207 ("drm/bridge: imx8mp-hdmi-pvi: convert to of_drm_find_and_get_bridge()")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
 drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
index 15fbb1be07cd..80e33d810a69 100644
--- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
+++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-pvi.c
@@ -179,6 +179,7 @@ static void imx8mp_hdmi_pvi_remove(struct platform_device *pdev)
 	struct imx8mp_hdmi_pvi *pvi = platform_get_drvdata(pdev);
 
 	drm_bridge_remove(&pvi->bridge);
+	drm_bridge_put(pvi->bridge.next_bridge);
 
 	pm_runtime_disable(&pdev->dev);
 }
-- 
2.34.1