net/mvneta: fix ierror statistics
net/mvneta: fix ierror statistics

Error packets were counted twice due to use of redundant counters.

Fixes: e9d5faffd10c ("net/mvneta: support basic stats")
Cc: stable@dpdk.org

Signed-off-by: Liron Himi <df7a1fcdffe73785b04dbbbb050c783d856d9736@marvell.com>
Reviewed-by: Yuri Chipchev <fa58be6b5752a34331c13589537dcfdcfdc71bae@marvell.com>
Tested-by: Liron Himi <df7a1fcdffe73785b04dbbbb050c783d856d9736@marvell.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk