RDMA/hfi1: Remove use of kmap()
kmap() is being deprecated and will break uses of device dax after PKS
protection is introduced.[1]
The kmap() used in sdma does not need to be global. Use the new
kmap_local_page() which works with PKS and may provide better performance
for this thread local mapping anyway.
[1] https://lore.kernel.org/lkml/
20201009195033.
3208459-59-ira.weiny@intel.com/
Link: https://lore.kernel.org/r/20210622061422.2633501-2-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>