cfi_flash: Remove return from void function

void functions don't need an explicit return at the end.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 7aa379b..d163573 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -1280,7 +1280,6 @@
 #endif
 	}
 	putc('\n');
-	return;
 }
 
 /*-----------------------------------------------------------------------