net/octeontx2: fix CQE ring prefetch on wrap around
net/octeontx2: fix CQE ring prefetch on wrap around

When computing the head of CQE ring of prefetch, use qmask to point to
the correct head index on wrap around case.

Fixes: cc4d7693f2d9 ("net/octeontx2: support Rx")
Cc: stable@dpdk.org

Signed-off-by: Kommula Shiva Shankar <593bf05d11d8fd4d5ee8ad48d92341f276b4e06f@marvell.com>
Acked-by: Jerin Jacob <352c4d4f9291b869992ddb67daa45ddc149fed30@marvell.com>

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