stdio: Correct a build error with driver model

When driver model is used for video but not for the keyboard, a compiler
warnings is produced. Fix it.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/common/stdio.c b/common/stdio.c
index 7252bab..f99cfe7 100644 (file)
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -283,6 +283,9 @@ int stdio_add_devices(void)
 #endif
 #ifdef CONFIG_DM_VIDEO
        struct udevice *vdev;
+# ifndef CONFIG_DM_KEYBOARD
+       int ret;
+# endif
 
        for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
             vdev;