[PATCH 5.15 410/779] mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@xxxxxxxxx>

[ Upstream commit e607879b0da18c451de5e91daf239cc2f2f8ff2d ]

of_find_node_by_path() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

Fixes: bb17230c61a6 ("mtd: parsers: ofpart: support BCM4908 fixed partitions")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20220605070726.5979-1-linmq006@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mtd/parsers/ofpart_bcm4908.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/parsers/ofpart_bcm4908.c b/drivers/mtd/parsers/ofpart_bcm4908.c
index 0eddef4c198e..bb072a0940e4 100644
--- a/drivers/mtd/parsers/ofpart_bcm4908.c
+++ b/drivers/mtd/parsers/ofpart_bcm4908.c
@@ -35,12 +35,15 @@ static long long bcm4908_partitions_fw_offset(void)
 		err = kstrtoul(s + len + 1, 0, &offset);
 		if (err) {
 			pr_err("failed to parse %s\n", s + len + 1);
+			of_node_put(root);
 			return err;
 		}
 
+		of_node_put(root);
 		return offset << 10;
 	}
 
+	of_node_put(root);
 	return -ENOENT;
 }
 
-- 
2.35.1