Fixed logic error introduced in previous commit.

dbms/src/Storages/MergeTree/MergeTreeData.cpp

@@ -804,7 +804,7 @@ void MergeTreeData::loadDataParts(bool skip_sanity_checks)
     auto disks = storage_policy->getDisks();
 
     /// Only check if user did touch storage configuration for this table.
-    if (getStoragePolicy()->isDefaultPolicy() && !skip_sanity_checks)
+    if (!getStoragePolicy()->isDefaultPolicy() && !skip_sanity_checks)
     {
         /// Check extra parts at different disks, in order to not allow to miss data parts at undefined disks.
         std::unordered_set<String> defined_disk_names;