vboot: fix die() hang for recovery path

When we are taking the recovery path there is no slot or
components to fill out.

Change-Id: Ic97a247629365ef54a340c4398cb7491935edc11
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10198
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/vendorcode/google/chromeos/vboot2/vboot_handoff.c

@@ -147,6 +147,10 @@ void vboot_fill_handoff(void)
 	/* needed until we finish transtion to vboot2 for kernel verification */
 	fill_vboot_handoff(vh, sd);
 
+	/* Nothing left to do in readonly path. */
+	if (vboot_is_readonly_path(wd))
+		return;
+
 	vb2_get_selected_region(wd, &fw_main);
 	fw_info = vboot_locate_components(&fw_main);
 	if (fw_info == NULL)