Merge pull request #1167 from magento-troll/MAGETWO-59234

[TROLL] MAGETWO-59234: [Github] Error when sort by tier price #6751

Author: kandy

app/code/Magento/Catalog/etc/eav_attributes.xml

@@ -43,5 +43,8 @@
         <attribute code="media_gallery">
             <field code="is_searchable" locked="true" />
         </attribute>
+        <attribute code="tier_price">
+            <field code="used_for_sort_by" locked="true" />
+        </attribute>
     </entity>
 </config>