[PATCH] drm/imx/dcss: Add missing of_node_put() in fail path

[Liang He]

In dcss_dev_create(), we should call of_node_put() in fail path for
of_graph_get_port_by_id() which will increase the refcount.

Fixes: 9021c317b770 ("drm/imx: Add initial support for DCSS on iMX8MQ")
Signed-off-by: Liang He <win...@126.com>
---
 drivers/gpu/drm/imx/dcss/dcss-dev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/imx/dcss/dcss-dev.c 
b/drivers/gpu/drm/imx/dcss/dcss-dev.c
index c849533ca83e..a99141538621 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-dev.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-dev.c
@@ -207,6 +207,7 @@ struct dcss_dev *dcss_dev_create(struct device *dev, bool 
hdmi_output)
 
        ret = dcss_submodules_init(dcss);
        if (ret) {
+               of_node_put(dcss->of_port);
                dev_err(dev, "submodules initialization failed\n");
                goto clks_err;
        }
-- 
2.25.1