examples/packet_ordering: move creation of reorder buffer
examples/packet_ordering: move creation of reorder buffer

There was no error checking after calling rte_reorder_create.
Move the creation of the reorder buffer before launching threads
in case of memory error.

Signed-off-by: Sergio Gonzalez Monroy <efb28dd1236fe58fb57f933212eddfe89b9da704@intel.com>

tsphillips/dpdk-fork,msune/dpdk,john-mcnamara-intel/dpdk,venkynv/dpdk-mirror,tsphillips/dpdk-fork,tsphillips/dpdk-fork,mixja/dpdk,msune/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,mixja/dpdk,venkynv/dpdk-mirror,mixja/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,venkynv/dpdk-mirror