reset: sti: add a missing blank line after declaration

This just fixes a checkpatch warning, no functional change.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
diff --git a/drivers/reset/sti/reset-syscfg.c b/drivers/reset/sti/reset-syscfg.c
index a78e09c..1600cc7 100644
--- a/drivers/reset/sti/reset-syscfg.c
+++ b/drivers/reset/sti/reset-syscfg.c
@@ -103,7 +103,9 @@
 static int syscfg_reset_dev(struct reset_controller_dev *rcdev,
 			    unsigned long idx)
 {
-	int err = syscfg_reset_assert(rcdev, idx);
+	int err;
+
+	err = syscfg_reset_assert(rcdev, idx);
 	if (err)
 		return err;