Simply refer to the generic affinity mask helper.
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Signed-off-by: NDoug Ledford <dledford@redhat.com>