fix LookupFunction flag

pkg/cluster/connection_pooler.go

@@ -760,11 +760,11 @@ func (c *Cluster) syncConnectionPooler(oldSpec, newSpec *acidv1.Postgresql, Look
 			// in between
 
 			// in this case also do not forget to install lookup function
-			if c.ConnectionPooler[role].LookupFunction {
+			if !c.ConnectionPooler[role].LookupFunction {
 				if err = c.syncConnectionPoolerSchema(LookupFunction); err != nil {
-					c.ConnectionPooler[role].LookupFunction = true
 					return NoSync, err
 				}
+				c.ConnectionPooler[role].LookupFunction = true
 			}
 
 			if reason, err = c.syncConnectionPoolerWorker(oldSpec, newSpec, role); err != nil {

pkg/cluster/sync.go

@@ -760,7 +760,7 @@ func (c *Cluster) syncDatabases() error {
 
 	if len(createDatabases) > 0 {
 		// create the pooler objects in new database if needed
-		if needConnectionPooler(&c.Spec) {
+		if c.ConnectionPooler != nil && needConnectionPooler(&c.Spec) {
 			c.syncConnectionPoolerSchema(c.installLookupFunction)
 		}
 	}