timestamp: Replace TS_ROMSTAGE_END conditional

If a combo bootblock+romstage was created, it may
not have ENV_ROMSTAGE set, while the timestamp of
(embedded) romstage should remain in its place.

Change-Id: I713732a291b6a6c0d8fcb23266f765fd33816db8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63432
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/lib/prog_loaders.c b/src/lib/prog_loaders.c
index 18d54f5..0b68805 100644
--- a/src/lib/prog_loaders.c
+++ b/src/lib/prog_loaders.c
@@ -87,11 +87,10 @@
 	struct prog ramstage =
 		PROG_INIT(PROG_RAMSTAGE, CONFIG_CBFS_PREFIX "/ramstage");
 
+	/* Call "end of romstage" here if postcar stage doesn't exist */
 	if (ENV_POSTCAR)
 		timestamp_add_now(TS_POSTCAR_END);
-
-	/* Call "end of romstage" here if postcar stage doesn't exist */
-	if (ENV_ROMSTAGE)
+	else
 		timestamp_add_now(TS_ROMSTAGE_END);
 
 	/*