irqchip/xilinx: Fill error code when irq domain registration fails

There is no ret filled in case of irq_domain_add_linear() failure.

Signed-off-by: Michal Simek <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Stefan Asserhall <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Michal Simek

drivers/irqchip/irq-xilinx-intc.c

@@ -228,6 +228,7 @@ static int __init xilinx_intc_of_init(struct device_node *intc,
 						  &xintc_irq_domain_ops, irqc);
 	if (!irqc->root_domain) {
 		pr_err("irq-xilinx: Unable to create IRQ domain\n");
+		ret = -EINVAL;
 		goto error;
 	}