This patch fixes the compilation problem with rte_smp_mb,
when there is else clause following it, as in test_barrier.c.
Fixes: 05c3fd7110 ("eal/ppc: atomic operations for IBM Power")
Cc: stable@dpdk.org
Signed-off-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
Acked-by: Luca Boccassi <bluca@debian.org>
Acked-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>