RDMA/rxe: Remove an unused member from struct rxe_mr

Commit 1e755506 ("Revert "RDMA/rxe: Create duplicate mapping tables for
FMRs"") brought back the member 'va' to struct rxe_mr. However, it is
actually used by nobody and thus can be removed.

Fixes: 1e755506 ("Revert "RDMA/rxe: Create duplicate mapping tables for FMRs"")
Link: https://lore.kernel.org/r/20220829012335.1212697-1-matsuda-daisuke@fujitsu.comSigned-off-by: Daisuke Matsuda <matsuda-daisuke@fujitsu.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/sw/rxe/rxe_mr.c

@@ -180,7 +180,6 @@ int rxe_mr_init_user(struct rxe_pd *pd, u64 start, u64 length, u64 iova,
 	mr->access = access;
 	mr->length = length;
 	mr->iova = iova;
-	mr->va = start;
 	mr->offset = ib_umem_offset(umem);
 	mr->state = RXE_MR_STATE_VALID;
 	mr->type = IB_MR_TYPE_USER;

drivers/infiniband/sw/rxe/rxe_verbs.c

@@ -1007,7 +1007,6 @@ static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 
 	n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page);
 
-	mr->va = ibmr->iova;
 	mr->iova = ibmr->iova;
 	mr->length = ibmr->length;
 	mr->page_shift = ilog2(ibmr->page_size);

drivers/infiniband/sw/rxe/rxe_verbs.h

@@ -305,7 +305,6 @@ struct rxe_mr {
 	u32			rkey;
 	enum rxe_mr_state	state;
 	enum ib_mr_type		type;
-	u64			va;
 	u64			iova;
 	size_t			length;
 	u32			offset;