Merge pull request #1891 from terraform-providers/b-elasticache-prm-g…

…rp-return

r/elasticache_parameter_group: Add missing return to retry logic

aws/resource_aws_elasticache_parameter_group.go

@@ -178,7 +178,7 @@ func resourceAwsElasticacheParameterGroupUpdate(d *schema.ResourceData, meta int
 				_, err = conn.ResetCacheParameterGroup(&resetOpts)
 				if err != nil {
 					if isAWSErr(err, "InvalidCacheParameterGroupState", " has pending changes") {
-						resource.RetryableError(err)
+						return resource.RetryableError(err)
 					}
 					return resource.NonRetryableError(err)
 				}