The glibc free allows free(NULL) as null operation,
so remove this useless null checks.
Coverity issue: 357719
Fixes: da138cd47e06 ("net/octeontx2: handle port reconfigure")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>