fm10k: correctly check if interface is removed

FM10K_REMOVED expects a hardware address, not a 'struct fm10k_hw'.

Fixes: 5cb8db4a ("fm10k: Add support for VF")
Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>