ibmvnic: Return from ibmvnic_resume if not in VNIC_OPEN state

If the ibmvnic driver is not in the VNIC_OPEN state, return from
ibmvnic_resume callback. If we are not in the VNIC_OPEN state, interrupts
may not be initialized and directly calling the interrupt handler will
cause a crash.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/ibmvnic.c

@@ -3859,6 +3859,9 @@ static int ibmvnic_resume(struct device *dev)
 	struct ibmvnic_adapter *adapter = netdev_priv(netdev);
 	int i;
 
+	if (adapter->state != VNIC_OPEN)
+		return 0;
+
 	/* kick the interrupt handlers just in case we lost an interrupt */
 	for (i = 0; i < adapter->req_rx_queues; i++)
 		ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,