wifi: mt76: mt7915: add missing of_node_put()

Add missing of_node_put() after of_reserved_mem_lookup()

Fixes: 99ad32a4 ("mt76: mt7915: add support for MT7986")
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/soc.c

@@ -278,6 +278,7 @@ static int mt7986_wmac_coninfra_setup(struct mt7915_dev *dev)
 		return -EINVAL;
 
 	rmem = of_reserved_mem_lookup(np);
+	of_node_put(np);
 	if (!rmem)
 		return -EINVAL;