CRISv10: Fix return before mutex_unlock in pcf8563

Signed-off-by: Simone Contini <s.contini@oltrelinux.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c
index ea69fab..1391b73 100644
--- a/arch/cris/arch-v10/drivers/pcf8563.c
+++ b/arch/cris/arch-v10/drivers/pcf8563.c
@@ -345,7 +345,7 @@
 	int ret;
 
 	mutex_lock(&pcf8563_mutex);
-	return pcf8563_ioctl(filp, cmd, arg);
+	ret = pcf8563_ioctl(filp, cmd, arg);
 	mutex_unlock(&pcf8563_mutex);
 
 	return ret;