ice: Remove casts on void pointers in LAG code

ice: Remove casts on void pointers in LAG code

This series will be touching on the LAG code in the ice driver,
to prevent moving or propagating casting on void pointers, clean
them up first.

This also allows for moving the variable initialization into the
variable declaration.

Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>