irqchip/sun4i: Remove unnecessary oom message

Fixes scripts/checkpatch.pl warning:
WARNING: Possible unnecessary 'out of memory' message

Remove it can help us save a bit of memory.

Signed-off-by: Zhen Lei <[e-mail]>
Signed-off-by: Marc Zyngier <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/irqchip/irq-sun4i.c

···
 				   struct device_node *parent)
 {
 	irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
-	if (!irq_ic_data) {
-		pr_err("kzalloc failed!\n");
+	if (!irq_ic_data)
 		return -ENOMEM;
-	}
 
 	irq_ic_data->enable_reg_offset = SUN4I_IRQ_ENABLE_REG_OFFSET;
 	irq_ic_data->mask_reg_offset = SUN4I_IRQ_MASK_REG_OFFSET;
···
 				   struct device_node *parent)
 {
 	irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
-	if (!irq_ic_data) {
-		pr_err("kzalloc failed!\n");
+	if (!irq_ic_data)
 		return -ENOMEM;
-	}
 
 	irq_ic_data->enable_reg_offset = SUNIV_IRQ_ENABLE_REG_OFFSET;
 	irq_ic_data->mask_reg_offset = SUNIV_IRQ_MASK_REG_OFFSET;