Move VerifyConfig after PrintConfig and LogConfig (#5149)

Move VerifyConfig after PrintConfig and LogConfig so that config can be dumped and the program can exit instead of starting loki.

cmd/loki/main.go

@@ -53,11 +53,6 @@ func main() {
 		os.Exit(1)
 	}
 
-	if config.VerifyConfig {
-		level.Info(util_log.Logger).Log("msg", "config is valid")
-		os.Exit(0)
-	}
-
 	if config.PrintConfig {
 		err := logutil.PrintConfig(os.Stderr, &config)
 		if err != nil {
@@ -72,6 +67,11 @@ func main() {
 		}
 	}
 
+	if config.VerifyConfig {
+		level.Info(util_log.Logger).Log("msg", "config is valid")
+		os.Exit(0)
+	}
+
 	if config.Tracing.Enabled {
 		// Setting the environment variable JAEGER_AGENT_HOST enables tracing
 		trace, err := tracing.NewFromEnv(fmt.Sprintf("loki-%s", config.Target))