Fix error return code in pipeline.c
diff --git a/icd/intel/pipeline.c b/icd/intel/pipeline.c
index 2ba4e46..391feff 100644
--- a/icd/intel/pipeline.c
+++ b/icd/intel/pipeline.c
@@ -1090,7 +1090,7 @@
      */
     if (info->vi.bindingCount > ARRAY_SIZE(pipeline->vb) ||
         info->vi.attributeCount > ARRAY_SIZE(pipeline->vb)) {
-        return VK_ERROR_UNKNOWN;
+        return VK_ERROR_VALIDATION_FAILED;
     }
 
     pipeline->vb_count = info->vi.bindingCount;