From 3a149169e4a2f9127022fec6ef5d71b4e804b3b9 Mon Sep 17 00:00:00 2001
From: Miaoqian Lin <linmq006@gmail.com>
Date: Wed, 25 May 2022 15:54:11 +0400
Subject: [PATCH] drm/mcde: Fix refcount leak in mcde_dsi_bind
Git-commit: 3a149169e4a2f9127022fec6ef5d71b4e804b3b9
Patch-mainline: v6.0-rc1
References: git-fixes

Every iteration of for_each_available_child_of_node() decrements
the reference counter of the previous node. There is no decrement
when break out from the loop and results in refcount leak.
Add missing of_node_put() to fix this.

Fixes: 5fc537bfd000 ("drm/mcde: Add new driver for ST-Ericsson MCDE")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220525115411.65455-1-linmq006@gmail.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/mcde/mcde_dsi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c
index 5651734ce977..9f9ac8699310 100644
--- a/drivers/gpu/drm/mcde/mcde_dsi.c
+++ b/drivers/gpu/drm/mcde/mcde_dsi.c
@@ -1111,6 +1111,7 @@ static int mcde_dsi_bind(struct device *dev, struct device *master,
 			bridge = of_drm_find_bridge(child);
 			if (!bridge) {
 				dev_err(dev, "failed to find bridge\n");
+				of_node_put(child);
 				return -EINVAL;
 			}
 		}
-- 
2.35.3