ARM: exynos: Fix timeout when booting secondary CPUs

Without this fix the loop waiting for the timeout exits, but the
subsequent test to see if the timeout occurred fails.
Signed-off-by: Stuart Menefy <stuart.menefy@mathembedded.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/mach-exynos/platsmp.c

@@ -336,9 +336,9 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
 		/* wait max 10 ms until cpu1 is on */
 		while (exynos_cpu_power_state(core_id)
 		       != S5P_CORE_LOCAL_PWR_EN) {
-			if (timeout-- == 0)
+			if (timeout == 0)
 				break;
-
+			timeout--;
 			mdelay(1);
 		}