For mlx5 DMA unmap, write lock should be used for rebuilding memory
region cache table rather than read lock.
Fixes: 989e999d9305 ("net/mlx5: support PCI device DMA map and unmap")
Cc: stable@dpdk.org
Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
1c196da274