thermal: exynos: Directly return 0 instead of using local ret variable

Author: Krzysztof Kozlowski <k.kozlowski@samsung.com>

The 'ret' variable in exynos5440_tmu_initialize() is initialized to 0
and returned as is. Replace it with direct return statement. This also
fixes coccinelle warning:
drivers/thermal/samsung/exynos_tmu.c:611:5-8: Unneeded variable: "ret". Return "0" on line 654

Reviewed-by: Alim Akhtar 
Acked-by: Lukasz Majewski 
Tested-by: Lukasz Majewski 
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Eduardo Valentin 
---
 drivers/thermal/samsung/exynos_tmu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
 
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 1af7ea8..f340e6e 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -608,7 +608,7 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
 {
 	struct exynos_tmu_data *data = platform_get_drvdata(pdev);
 	unsigned int trim_info = 0, con, rising_threshold;
-	int ret = 0, threshold_code;
+	int threshold_code;
 	int crit_temp = 0;
 
 	/*
@@ -651,7 +651,8 @@ static int exynos5440_tmu_initialize(struct platform_device *pdev)
 	/* Clear the PMIN in the common TMU register */
 	if (!data->id)
 		writel(0, data->base_second + EXYNOS5440_TMU_PMIN);
-	return ret;
+
+	return 0;
 }
 
 static int exynos7_tmu_initialize(struct platform_device *pdev)