[PATCH AUTOSEL 4.14 052/170] soc: bcm: brcmstb: Don't leak device tree node reference

[Sasha Levin]

From: Yangtao Li <tiny.win...@gmail.com>

[ Upstream commit 1861a7f07e02292830a1ca256328d370deefea30 ]

of_find_node_by_path() acquires a reference to the node returned by it
and that reference needs to be dropped by its caller. soc_is_brcmstb()
doesn't do that, so fix it.

[treding: slightly rewrite to avoid inline comparison]

Fixes: d52fad262041 ("soc: add stubs for brcmstb SoC's")
Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
Signed-off-by: Florian Fainelli <f.faine...@gmail.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/soc/bcm/brcmstb/common.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/bcm/brcmstb/common.c b/drivers/soc/bcm/brcmstb/common.c
index 22e98a90468c..2f5ec424a390 100644
--- a/drivers/soc/bcm/brcmstb/common.c
+++ b/drivers/soc/bcm/brcmstb/common.c
@@ -31,13 +31,17 @@ static const struct of_device_id brcmstb_machine_match[] = {
 
 bool soc_is_brcmstb(void)
 {
+       const struct of_device_id *match;
        struct device_node *root;
 
        root = of_find_node_by_path("/");
        if (!root)
                return false;
 
-       return of_match_node(brcmstb_machine_match, root) != NULL;
+       match = of_match_node(brcmstb_machine_match, root);
+       of_node_put(root);
+
+       return match != NULL;
 }
 
 static const struct of_device_id sun_top_ctrl_match[] = {
-- 
2.19.1