net: dsa: sja1105: fix lastused timestamp in flower stats

flow_stats_update() takes an absolute timestamp for lastused, not delta.
Fix that.

Signed-off-by: David Yang <mmyangfl@gmail.com>
Link: https://patch.msgid.link/20260614141320.1133321-1-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/sja1105/sja1105_vl.c

@@ -791,8 +791,7 @@ int sja1105_vl_stats(struct sja1105_private *priv, int port,
 	pkts = timingerr + unreleased + lengtherr;
 
 	flow_stats_update(stats, 0, pkts - rule->vl.stats.pkts, 0,
-			  jiffies - rule->vl.stats.lastused,
-			  FLOW_ACTION_HW_STATS_IMMEDIATE);
+			  jiffies, FLOW_ACTION_HW_STATS_IMMEDIATE);
 
 	rule->vl.stats.pkts = pkts;
 	rule->vl.stats.lastused = jiffies;