leds: mt6360: Fix memory leak in mt6360_init_isnk_properties()

The fwnode_for_each_child_node() loop requires manual intervention to
decrement the child refcount in case of an early return.

Add the missing calls to fwnode_handle_put(child) to avoid memory leaks
in the error paths.

Cc: [e-mail]
Fixes: 679f8652064b ("leds: Add mt6360 driver")
Signed-off-by: Javier Carrasco <[e-mail]>
Acked-by: Pavel Machek <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/flash/leds-mt6360.c

···
 
 			ret = fwnode_property_read_u32(child, "reg", &reg);
 			if (ret || reg > MT6360_LED_ISNK3 ||
-			    priv->leds_active & BIT(reg))
+			    priv->leds_active & BIT(reg)) {
+				fwnode_handle_put(child);
 				return -EINVAL;
+			}
 
 			ret = fwnode_property_read_u32(child, "color", &color);
 			if (ret) {
 				dev_err(priv->dev,
 					"led %d, no color specified\n",
 					led->led_no);
+				fwnode_handle_put(child);
 				return ret;
 			}