Use kzalloc_node instead of kzalloc for rdmavt memory region segment
allocation to optimize for performance on NUMA platforms.
Reviewed-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NJubin John <jubin.john@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>