bonding: fix reference count leak in balance-alb mode

Commit d5410ac7 ("net:bonding:support balance-alb interface
with vlan to bridge") introduced a reference count leak by not releasing
the reference acquired by ip_dev_find().  Remedy this by insuring the
reference is released.

Fixes: d5410ac7 ("net:bonding:support balance-alb interface with vlan to bridge")
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/26758.1660194413@famineSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/bonding/bond_alb.c

@@ -668,8 +668,11 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
 
 	dev = ip_dev_find(dev_net(bond->dev), arp->ip_src);
 	if (dev) {
-		if (netif_is_bridge_master(dev))
+		if (netif_is_bridge_master(dev)) {
+			dev_put(dev);
 			return NULL;
+		}
+		dev_put(dev);
 	}
 
 	if (arp->op_code == htons(ARPOP_REPLY)) {