x86: Re-get cfg_new in case reuse/move irq_desc

When irq_desc is moved, we need to make sure to use the right cfg_new.
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B07A739.3030104@kernel.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/apic/io_apic.c

@@ -3186,6 +3186,7 @@ unsigned int create_irq_nr(unsigned int irq_want, int node)
 			continue;
 
 		desc_new = move_irq_desc(desc_new, node);
+		cfg_new = desc_new->chip_data;
 
 		if (__assign_irq_vector(new, cfg_new, apic->target_cpus()) == 0)
 			irq = new;