RDMA/irdma: Fix support for 64k pages

Virtual QP and CQ require a 4K HW page size but the driver passes
PAGE_SIZE to ib_umem_find_best_pgsz() instead.

Fix this by using the appropriate 4k value in the bitmap passed to
ib_umem_find_best_pgsz().

Fixes: 693a538 ("RDMA/irdma: Split mr alloc and free into new functions")
Link: https://lore.kernel.org/r/20231129202143.1434-4-shiraz.saleem@intel.com
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

Author: Mike Marciniszyn

drivers/infiniband/hw/irdma/verbs.c

@@ -2914,7 +2914,7 @@ static struct irdma_mr *irdma_alloc_iwmr(struct ib_umem *region,
 	iwmr->type = reg_type;
 
 	pgsz_bitmap = (reg_type == IRDMA_MEMREG_TYPE_MEM) ?
-		iwdev->rf->sc_dev.hw_attrs.page_size_cap : PAGE_SIZE;
+		iwdev->rf->sc_dev.hw_attrs.page_size_cap : SZ_4K;
 
 	iwmr->page_size = ib_umem_find_best_pgsz(region, pgsz_bitmap, virt);
 	if (unlikely(!iwmr->page_size)) {