irqchip/exynos-combiner: 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]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Marc Zyngier <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/irqchip/exynos-combiner.c

···
 	nr_irq = max_nr * IRQ_IN_COMBINER;
 
 	combiner_data = kcalloc(max_nr, sizeof (*combiner_data), GFP_KERNEL);
-	if (!combiner_data) {
-		pr_warn("%s: could not allocate combiner data\n", __func__);
+	if (!combiner_data)
 		return;
-	}
 
 	combiner_irq_domain = irq_domain_add_linear(np, nr_irq,
 				&combiner_irq_domain_ops, combiner_data);