IB/qib: remove duplicate code

Remove duplicate code.

Addresses-Coverity-ID: 1226951
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/qib/qib_mad.c

@@ -874,8 +874,6 @@ static int subn_set_portinfo(struct ib_smp *smp, struct ib_device *ibdev,
 		ib_dispatch_event(&event);
 	}
 
-	ret = subn_get_portinfo(smp, ibdev, port);
-
 	/* restore re-reg bit per o14-12.2.1 */
 	pip->clientrereg_resv_subnetto |= clientrereg;