IB/hfi1: Use reference count wrapper for MRs

Some parts of the code don't use the standard driver
wrapper for memory region reference counters. Use the
standard driver wrapper throughout the code.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/sw/rdmavt/mr.c

@@ -793,7 +793,7 @@ int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd,
 		mr = rcu_dereference(dev->dma_mr);
 		if (!mr)
 			goto bail;
-		atomic_inc(&mr->refcount);
+		rvt_get_mr(mr);
 		rcu_read_unlock();
 
 		isge->mr = mr;
@@ -814,7 +814,7 @@ int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd,
 		     off + sge->length > mr->length ||
 		     (mr->access_flags & acc) != acc))
 		goto bail;
-	atomic_inc(&mr->refcount);
+	rvt_get_mr(mr);
 	rcu_read_unlock();
 
 	off += mr->offset;
@@ -892,7 +892,7 @@ int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
 		mr = rcu_dereference(rdi->dma_mr);
 		if (!mr)
 			goto bail;
-		atomic_inc(&mr->refcount);
+		rvt_get_mr(mr);
 		rcu_read_unlock();
 
 		sge->mr = mr;
@@ -913,7 +913,7 @@ int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
 	if (unlikely(vaddr < mr->iova || off + len > mr->length ||
 		     (mr->access_flags & acc) == 0))
 		goto bail;
-	atomic_inc(&mr->refcount);
+	rvt_get_mr(mr);
 	rcu_read_unlock();
 
 	off += mr->offset;