nfp: clear ring delayed kick counters

We need to clear delayed kick counters when we free rings otherwise
after ndo_close()/ndo_open() we could kick HW by more entries than
actually written to rings.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Rolf Neugebauer <rolf.neugebauer@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 7060539..6c5af4c 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -1363,6 +1363,7 @@
 	tx_ring->wr_p = 0;
 	tx_ring->rd_p = 0;
 	tx_ring->qcp_rd_p = 0;
+	tx_ring->wr_ptr_add = 0;
 
 	tx_ring->txbufs = NULL;
 	tx_ring->txds = NULL;
@@ -1437,6 +1438,7 @@
 	rx_ring->cnt = 0;
 	rx_ring->wr_p = 0;
 	rx_ring->rd_p = 0;
+	rx_ring->wr_ptr_add = 0;
 
 	rx_ring->rxbufs = NULL;
 	rx_ring->rxds = NULL;