prog_loader: Change legacy_romstage_select_and_load() to return cb_err

This is passing through a cb_err from cbfs_prog_stage_load(), so it
should be declared to return that as well.

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I5510d05953fe8c0e2cb511f01f862b66ced154ae
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62656
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/lib/prog_loaders.c

@@ -27,7 +27,7 @@ void run_romstage(void)
 	timestamp_add_now(TS_COPYROM_START);
 
 	if (ENV_X86 && CONFIG(BOOTBLOCK_NORMAL)) {
-		if (legacy_romstage_select_and_load(&romstage))
+		if (legacy_romstage_select_and_load(&romstage) != CB_SUCCESS)
 			goto fail;
 	} else {
 		if (cbfs_prog_stage_load(&romstage))