irqchip/apple-aic: Skip unnecessary enabling of use_fast_ipi

use_fast_ipi is true by default and there is no need to "enable" it.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/all/20240901034143.12731-3-towinchenmi@gmail.com

Author: asdfugil

drivers/irqchip/irq-apple-aic.c

@@ -987,9 +987,7 @@ static int __init aic_of_ic_init(struct device_node *node, struct device_node *p
 	off += sizeof(u32) * (irqc->max_irq >> 5); /* MASK_CLR */
 	off += sizeof(u32) * (irqc->max_irq >> 5); /* HW_STATE */
 
-	if (irqc->info.fast_ipi)
-		static_branch_enable(&use_fast_ipi);
-	else
+	if (!irqc->info.fast_ipi)
 		static_branch_disable(&use_fast_ipi);
 
 	irqc->info.die_stride = off - start_off;