power: regulator: scmi: simplify scmi_voltd_set_enable()

Simplify scmi_voltd_set_enable() exit sequence.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/power/regulator/scmi_regulator.c b/drivers/power/regulator/scmi_regulator.c
index 352daa9..8011480 100644
--- a/drivers/power/regulator/scmi_regulator.c
+++ b/drivers/power/regulator/scmi_regulator.c
@@ -51,11 +51,7 @@
 	if (ret)
 		return ret;
 
-	ret = scmi_to_linux_errno(out.status);
-	if (ret)
-		return ret;
-
-	return ret;
+	return scmi_to_linux_errno(out.status);
 }
 
 static int scmi_voltd_get_enable(struct udevice *dev)