IB/Verbs: Use management helper rdma_cap_ib_mad()

Introduce helper rdma_cap_ib_mad() to help us check if the port of an
IB device support Infiniband Management Datagrams.

Signed-off-by: Michael Wang <yun.wang@profitbricks.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index 507eb67..80777cd 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -3066,7 +3066,7 @@
 	}
 
 	for (i = start; i <= end; i++) {
-		if (!rdma_ib_or_iboe(device, i))
+		if (!rdma_cap_ib_mad(device, i))
 			continue;
 
 		if (ib_mad_port_open(device, i)) {
@@ -3087,7 +3087,7 @@
 
 error:
 	while (--i >= start) {
-		if (!rdma_ib_or_iboe(device, i))
+		if (!rdma_cap_ib_mad(device, i))
 			continue;
 
 		if (ib_agent_port_close(device, i))
@@ -3111,7 +3111,7 @@
 	}
 
 	for (i = start; i <= end; i++) {
-		if (!rdma_ib_or_iboe(device, i))
+		if (!rdma_cap_ib_mad(device, i))
 			continue;
 
 		if (ib_agent_port_close(device, i))