ixgbe: fix Rx queue reset
ixgbe: fix Rx queue reset

As Steve pointed out, the commit 11b220c6498d ("ixgbe: fix release queue mbufs")
is not complete.
As at queue stop we don't reset vector related rx queue fields to their
initial values.

Fixes: c95584dc2b18 ("ixgbe: new vectorized functions for Rx/Tx")

Reported-by: Cunming Liang <7edc6dd0948177c688da9b288939d80da3db4303@intel.com>
Signed-off-by: Konstantin Ananyev <cbd5212b59ab42a210d72992d23a3aa17cfd3eaf@intel.com>

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