enic: Fix address deregistration for sriov vf during port profile disassociate

enic: Fix address deregistration for sriov vf during port profile disassociate

This patch fixes erroneous PF address deregistration in cases where
a port profile disassociate is called on an already disassociated interface.

(cherry picked from commit 9f1de88ddd5eac43c14ed20835b4c738be61e162)
Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
Signed-off-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: sujith sankar <ssujith@cisco.com>
Signed-off-by: ChingWei Chang <cwchang@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Joe Jin <joe.jin@oracle.com>