RDMA/irdma: Use the queried port attributes

Instead of hard code the gid_table_len value, use the value from the
ib_query_port() attributes.

Fixes: b48c24c2d7 ("RDMA/irdma: Implement device supported verb APIs")
Link: https://lore.kernel.org/r/20210620201503.67055-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/irdma/verbs.c

@@ -3633,7 +3633,7 @@ static int irdma_iw_port_immutable(struct ib_device *ibdev, u32 port_num,
 	err = ib_query_port(ibdev, port_num, &attr);
 	if (err)
 		return err;
-	immutable->gid_tbl_len = 1;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
 
 	return 0;
 }