Phonet: fix oops in phonet_address_del() on non-Phonet device

A NULL dereference would occur when trying to delete an addres from a
network device that does not have any Phonet address.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed