Avoid unnecessary mapping of Sort object.

Closes: #4846

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoTemplate.java

@@ -2593,9 +2593,10 @@ public class MongoTemplate
 		QueryContext queryContext = queryOperations.createQueryContext(new BasicQuery(query, fields));
 		Document mappedFields = queryContext.getMappedFields(entity, EntityProjection.nonProjecting(entityClass));
 		Document mappedQuery = queryContext.getMappedQuery(entity);
-		Document mappedSort = getMappedSortObject(query, entityClass);
 
 		if (LOGGER.isDebugEnabled()) {
+
+			Document mappedSort = getMappedSortObject(query, entityClass);
 			LOGGER.debug(String.format("find using query: %s fields: %s sort: %s for class: %s in collection: %s",
 					serializeToJsonSafely(mappedQuery), mappedFields, serializeToJsonSafely(mappedSort), entityClass,
 					collectionName));