net/ice/base: fix null pointer dereference

net/ice/base: fix null pointer dereference

Added handling of allocation fault for ice_vsi_list_map_info
Should also check dereference of NULL pointer to filters VSI list
information for FWD_TO_VSI_LISt type only, otherwise, the FWD_TO_VSI type
filters by the given VSI can't be located.

Also the point *pi should not be NULL pointer, it is a reference to raw
data field, so remove this variable, use the reference directly.

Fixes: c7dd15931183 ("net/ice/base: add virtual switch code")
Cc: stable@dpdk.org
Signed-off-by: Jacek Bułatek <jacekx.bulatek@intel.com>
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>