bitnami/kafka Fix Upgrade regression from PR #4683 (#5073)

bitnami/kafka/Chart.yaml

@@ -29,4 +29,4 @@ name: kafka
 sources:
   - https://github.com/bitnami/bitnami-docker-kafka
   - https://kafka.apache.org/
-version: 12.6.0
+version: 12.6.1

bitnami/kafka/templates/scripts-configmap.yaml

@@ -71,10 +71,10 @@ data:
   setup.sh: |-
     #!/bin/bash
 
+    ID="${MY_POD_NAME#"{{ $fullname }}-"}"
     if [[ -f "/bitnami/kafka/data/meta.properties" ]]; then
         export KAFKA_CFG_BROKER_ID="$(grep "broker.id" /bitnami/kafka/data/meta.properties | awk -F '=' '{print $2}')"
     else
-        ID="${MY_POD_NAME#"{{ $fullname }}-"}"
         export KAFKA_CFG_BROKER_ID="$((ID + {{ .Values.minBrokerId }}))"
     fi