mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset

[ Upstream commit 93860ba81ec7b2b5835a4e9c9e46eb9f5873dfc4 ]

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: 4fae4be93fb1 ("mtd: parsers: ofpart: support BCM4908 fixed partitions")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220605070726.5979-1-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mtd/parsers/ofpart_bcm4908.c b/drivers/mtd/parsers/ofpart_bcm4908.c
index 0eddef4c198eccc9be8ae67f45d48d22b6dbb923..bb072a0940e480112211505f12534d4b6d5d915f 100644 (file)
--- 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;
 }