ixgbe: update all DESC_ADV macros to accept a ring pointer

All of the DESC_ADV macros are currently needing the pointers to be
de-referenced before accessing the ring.  Instead of having to add all of
the asterisks it is easier to just update the macro to expect a pointer to
the ring.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c
index 072327c..86fa07c 100644
--- a/drivers/net/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ixgbe/ixgbe_fcoe.c
@@ -471,7 +471,7 @@
 
 	/* write context desc */
 	i = tx_ring->next_to_use;
-	context_desc = IXGBE_TX_CTXTDESC_ADV(*tx_ring, i);
+	context_desc = IXGBE_TX_CTXTDESC_ADV(tx_ring, i);
 	context_desc->vlan_macip_lens	= cpu_to_le32(vlan_macip_lens);
 	context_desc->seqnum_seed	= cpu_to_le32(fcoe_sof_eof);
 	context_desc->type_tucmd_mlhl	= cpu_to_le32(type_tucmd);