hwmon: (ltc2992) Put fwnode in error case during ->probe()

In each iteration fwnode_for_each_available_child_node() bumps a reference counting of a loop variable followed by dropping in on a next iteration,

Since in error case the loop is broken, we have to drop a reference count by ourselves. Do it for port_fwnode in error case during ->probe().

Fixes b0bd407e94b0 ("hwmon: (ltc2992) Add support")

Cc Alexandru Tachici <[email protected]>

Signed-off-by Andy Shevchenko <[email protected]>

---
 drivers/hwmon/ltc2992.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

drivers/hwmon/ltc2992.c +6 -2

index 4382105bf142..2a4bed0ab226 100644
@@ -900,11 +900,15 @@ static int ltc2992_parse_dt(struct ltc2992_state *st)
 
 	fwnode_for_each_available_child_node(fwnode, child) {
 		ret = fwnode_property_read_u32(child, "reg", &addr);
-		if (ret < 0)
+		if (ret < 0) {
+			fwnode_handle_put(child);
 			return ret;
+		}
 
-		if (addr > 1)
+		if (addr > 1) {
+			fwnode_handle_put(child);
 			return -EINVAL;
+		}
 
 		ret = fwnode_property_read_u32(child, "shunt-resistor-micro-ohms", &val);
 		if (!ret)