[PATCH] NFC: fix possible resource leak

[Pan Bian]

Put the device to avoid resource leak on path that the polling flag is
invalid.

Fixes: a831b9132065 ("NFC: Do not return EBUSY when stopping a poll that's 
already stopped")
Signed-off-by: Pan Bian <bianpan2...@163.com>
---
 net/nfc/netlink.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 573b38ad2f8e..e161ef2d4720 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -852,6 +852,7 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct 
genl_info *info)
 
        if (!dev->polling) {
                device_unlock(&dev->dev);
+               nfc_put_device(dev);
                return -EINVAL;
        }
 
-- 
2.17.1