For net/mlx4 and net/mlx5, remove unnecessary wmb for Memory Region
cache.

v2:
1. keep the order of dev_gen and global cache (Slava Ovsiienko)
2. remove the wmb at last instead of moving it forward
3. remove atomic_thread_fence patches

Feifei Wang (2):
  net/mlx4: remove unnecessary wmb for Memory Region cache
  net/mlx5: remove unnecessary wmb for Memory Region cache

 drivers/net/mlx4/mlx4_mr.c | 13 +++++--------
 drivers/net/mlx5/mlx5_mr.c | 26 ++++++++++----------------
 2 files changed, 15 insertions(+), 24 deletions(-)

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2.25.1