There are duplicates of assignment here, the one before null check
may cause a null pointer deference, so remove the previous one.
Fixes: 09c7e63a71f9 ("net/memif: introduce memory interface PMD")
Cc: stable@dpdk.org
Signed-off-by: Weiguo Li <liwg06@foxmail.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
b6c0f464af