util/amdfwtool: select A/B recovery when ISH is used

In newer AMD SoCs, the image slot header is used in the AMD A/B recovery
scheme, so set recovery_ab to true when need_ish is true. Also move the
block of code before the process_config call, since that call will
already use the recovery_ab field of the cb_config struct.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I65903765514f215bf5cc9b949d0b95aff781eb34
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63184
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/util/amdfwtool/amdfwtool.c b/util/amdfwtool/amdfwtool.c
index 9e7f920..7c977a2 100644
--- a/util/amdfwtool/amdfwtool.c
+++ b/util/amdfwtool/amdfwtool.c
@@ -1684,6 +1684,12 @@
 		}
 	}
 
+	if (cb_config.need_ish)
+		cb_config.recovery_ab = true;
+
+	if (cb_config.recovery_ab)
+		cb_config.multi_level = true;
+
 	if (config) {
 		config_handle = fopen(config, "r");
 		if (config_handle == NULL) {
@@ -1724,10 +1730,6 @@
 		retval = 1;
 	}
 
-	if (cb_config.recovery_ab) {
-		cb_config.multi_level = true;
-	}
-
 	if (retval) {
 		usage();
 		return retval;