[PATCH v2 1/3] hwmon: (ltc2992) Fix memory leak in ltc2992_parse_dt()

[Javier Carrasco]

A new error path was added to the fwnode_for_each_available_node() loop
in ltc2992_parse_dt(), which leads to an early return that requires a
call to fwnode_handle_put() to avoid a memory leak in that case.

Add the missing fwnode_handle_put() in the error path from a zero value
shunt resistor.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 10b029020487 ("hwmon: (ltc2992) Avoid division by zero")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@xxxxxxxxx>
---
 drivers/hwmon/ltc2992.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/hwmon/ltc2992.c b/drivers/hwmon/ltc2992.c
index 229aed15d5ca..d4a93223cd3b 100644
--- a/drivers/hwmon/ltc2992.c
+++ b/drivers/hwmon/ltc2992.c
@@ -876,9 +876,11 @@ static int ltc2992_parse_dt(struct ltc2992_state *st)
 
 		ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val);
 		if (!ret) {
-			if (!val)
+			if (!val) {
+				fwnode_handle_put(child);
 				return dev_err_probe(&st->client->dev, -EINVAL,
 						     "shunt resistor value cannot be zero\n");
+			}
 			st->r_sense_uohm[addr] = val;
 		}
 	}

-- 
2.40.1