RDS: IB: Remove an unused structure member

Signed-off-by: NBart Van Assche <bart.vanassche@sandisk.com>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@oracle.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: linux-rdma@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: rds-devel@oss.oracle.com
Signed-off-by: NDoug Ledford <dledford@redhat.com>

net/rds/ib_mr.h

@@ -45,7 +45,6 @@
 
 struct rds_ib_fmr {
 	struct ib_fmr		*fmr;
-	u64			*dma;
 };
 
 enum rds_ib_fr_state {