RDMA/qib: Remove deprecated kmap() call

kmap() has been deprecated in favor of the kmap_local_page() call.
kmap_local_page() is thread local.

In the sdma coalesce case the page allocated is potentially free'ed in a
different context through qib_sdma_get_complete() ->
qib_user_sdma_make_progress().  The use of kmap_local_page() is
inappropriate in this call path.  However, the page is allocated using
GFP_KERNEL and will never be from highmem.

Remove the use of kmap calls and use page_address() in this case.

Signed-off-by: Ira Weiny <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Dennis Dalessandro <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>

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