thermal: exynos: Return success even if no cooling data supplied

This patch removes the error return in the bind/unbind routine
as the platform may not register any cpufreq cooling data.

Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>

drivers/thermal/samsung/exynos_thermal_common.c

@@ -132,7 +132,7 @@ static int exynos_bind(struct thermal_zone_device *thermal,
 	tab_size = data->cooling_data.freq_clip_count;
 
 	if (tab_ptr == NULL || tab_size == 0)
-		return -EINVAL;
+		return 0;
 
 	/* find the cooling device registered*/
 	for (i = 0; i < th_zone->cool_dev_size; i++)
@@ -181,7 +181,7 @@ static int exynos_unbind(struct thermal_zone_device *thermal,
 	tab_size = data->cooling_data.freq_clip_count;
 
 	if (tab_size == 0)
-		return -EINVAL;
+		return 0;
 
 	/* find the cooling device registered*/
 	for (i = 0; i < th_zone->cool_dev_size; i++)