thermal: rcar: Use pm_runtime_put() i.s.o. pm_runtime_put_sync()

There's no need for this to be synchronous

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 5a37940..a8ed0e0 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -470,7 +470,7 @@
 			rcar_thermal_irq_disable(priv);
 	}
 
-	pm_runtime_put_sync(dev);
+	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
 
 	return ret;
@@ -488,7 +488,7 @@
 			rcar_thermal_irq_disable(priv);
 	}
 
-	pm_runtime_put_sync(dev);
+	pm_runtime_put(dev);
 	pm_runtime_disable(dev);
 
 	return 0;