[PATCH net-next] net: dsa: add missing of_node_put

From: Himadri Pandya
Date: Fri Feb 22 2019 - 06:18:44 EST


Decrement the reference count on port while returning out of the
loop. Issue identified by Coccinelle.

Signed-off-by: Himadri Pandya <himadri18.07@xxxxxxxxx>
---
net/dsa/dsa2.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index a1917025e155..396e7433dd8f 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -624,19 +624,25 @@ static int dsa_switch_parse_ports_of(struct dsa_switch *ds,
for_each_available_child_of_node(ports, port) {
err = of_property_read_u32(port, "reg", &reg);
if (err)
- return err;
+ goto put_port;

- if (reg >= ds->num_ports)
- return -EINVAL;
+ if (reg >= ds->num_ports) {
+ err = -EINVAL;
+ goto put_port;
+ }

dp = &ds->ports[reg];

err = dsa_port_parse_of(dp, port);
if (err)
- return err;
+ goto put_port;
}

return 0;
+
+put_port:
+ of_node_put(port);
+ return err;
}

static int dsa_switch_parse_member_of(struct dsa_switch *ds,
--
2.17.1