Fixed exception on port deallocate for eswitch if network is not present
Fixed exception on port deallocate for eswitch if network is not present

Change-Id: I2ed768769deaf5283c532c73a547ab1bd75de1ea
Signed-off-by: Lenny Verkhovsky <279495b3851b0746f66343699074bbf2e780efbe@mellanox.com>

stackforge/networking-mlnx,stackforge/networking-mlnx,openstack/networking-mlnx,openstack/networking-mlnx