[PATCH] macsec: missing dev_put() on error in macsec_newlink()

[Dan Carpenter]

We moved the dev_hold(real_dev); call earlier in the function but forgot
to update the error paths.

Fixes: 0759e552bce7 ("macsec: fix negative refcnt on parent link")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 7de88b33d5b9..9cbb0c8a896a 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -3277,7 +3277,7 @@ static int macsec_newlink(struct net *net, struct 
net_device *dev,
 
        err = netdev_upper_dev_link(real_dev, dev, extack);
        if (err < 0)
-               goto unregister;
+               goto put_dev;
 
        /* need to be already registered so that ->init has run and
         * the MAC addr is set
@@ -3316,7 +3316,8 @@ static int macsec_newlink(struct net *net, struct 
net_device *dev,
        macsec_del_dev(macsec);
 unlink:
        netdev_upper_dev_unlink(real_dev, dev);
-unregister:
+put_dev:
+       dev_put(real_dev);
        unregister_netdevice(dev);
        return err;
 }