Dan Carpenter found that there was a dereference before a check,
added in 56d00c67(bonding:delete lacp_fast from ad_bond_info).
Signed-off-by: NWeiping Pan <panweiping3@gmail.com>
Signed-off-by: NJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: NDavid S. Miller <davem@conan.davemloft.net>