irqchip/gic-v3: Move irq_domain_update_bus_token to after checking for NULL domain

irq_domain_update_bus_token should be called after checking for NULL
domain.
Signed-off-by: Liguang Zhang <zhangliguang@linux.alibaba.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1583983255-44115-1-git-send-email-zhangliguang@linux.alibaba.com

drivers/irqchip/irq-gic-v3.c

@@ -1581,7 +1581,6 @@ static int __init gic_init_bases(void __iomem *dist_base,
 
 	gic_data.domain = irq_domain_create_tree(handle, &gic_irq_domain_ops,
 						 &gic_data);
-	irq_domain_update_bus_token(gic_data.domain, DOMAIN_BUS_WIRED);
 	gic_data.rdists.rdist = alloc_percpu(typeof(*gic_data.rdists.rdist));
 	gic_data.rdists.has_rvpeid = true;
 	gic_data.rdists.has_vlpis = true;
@@ -1592,6 +1591,8 @@ static int __init gic_init_bases(void __iomem *dist_base,
 		goto out_free;
 	}
 
+	irq_domain_update_bus_token(gic_data.domain, DOMAIN_BUS_WIRED);
+
 	gic_data.has_rss = !!(typer & GICD_TYPER_RSS);
 	pr_info("Distributor has %sRange Selector support\n",
 		gic_data.has_rss ? "" : "no ");