octeontx2-pf: Send UP messages to VF only when VF is up.

When PF sending link status messages to VF, it is possible
that by the time link_event_task work function is executed
VF might have brought down. Hence before sending VF link
status message check whether VF is up to receive it.

Fixes: ad513ed938c9 ("octeontx2-vf: Link event notification support")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index f85d38f..b40bd0e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -3122,6 +3122,9 @@
 	vf_idx = config - config->pf->vf_configs;
 	pf = config->pf;
 
+	if (config->intf_down)
+		return;
+
 	mutex_lock(&pf->mbox.lock);
 
 	dwork = &config->link_event_work;