mlxsw: core_linecards: Fix size of array element during ini_files allocation

types_info->ini_files is an array of pointers
to struct mlxsw_linecard_ini_file.

Fix the kmalloc_array() argument to be of a size of a pointer.

Addresses-Coverity: ("Incorrect expression  (SIZEOF_MISMATCH)")
Fixes: b217127e

 ("mlxsw: core_linecards: Add line card objects and implement provisioning")
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220420142007.3041173-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>