net: ethernet: aquantia: Call netdev_register after all initialized.

netdev_register should be called when everything is initialized.
Also we should use net_device->reg_state field instead own
"is_ndev_registered" flag to avoid any race.
Signed-off-by: NPavel Belous <pavel.belous@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -261,16 +261,16 @@ int aq_nic_ndev_register(struct aq_nic_s *self)
 		ether_addr_copy(self->ndev->dev_addr, mac_addr_permanent);
 	}
 #endif
-	err = register_netdev(self->ndev);
-	if (err < 0)
-		goto err_exit;
 
-	self->is_ndev_registered = true;
 	netif_carrier_off(self->ndev);
 
 	for (i = AQ_CFG_VECS_MAX; i--;)
 		aq_nic_ndev_queue_stop(self, i);
 
+	err = register_netdev(self->ndev);
+	if (err < 0)
+		goto err_exit;
+
 err_exit:
 	return err;
 }
@@ -293,7 +293,7 @@ void aq_nic_ndev_free(struct aq_nic_s *self)
 	if (!self->ndev)
 		goto err_exit;
 
-	if (self->is_ndev_registered)
+	if (self->ndev->reg_state == NETREG_REGISTERED)
 		unregister_netdev(self->ndev);
 
 	if (self->aq_hw)

drivers/net/ethernet/aquantia/atlantic/aq_nic_internal.h

@@ -22,7 +22,6 @@ struct aq_nic_s {
 	unsigned int aq_vecs;
 	unsigned int packet_filter;
 	unsigned int power_state;
-	bool is_ndev_registered;
 	u8 port;
 	struct aq_hw_ops aq_hw_ops;
 	struct aq_hw_caps_s aq_hw_caps;