Fix uninialized variables

Change-Id: Ie5da4547fa764e55162aff287cbb338ed4324093


[ROCm/ROCR-Runtime commit: 9d842dd1d8]

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/amd_blit_sdma.cpp

@@ -122,6 +122,8 @@ BlitSdma<RingIndexTy, HwIndexMonotonic, SizeToCountOffset, useGCR>::BlitSdma()
       cached_commit_index_(0),
       platform_atomic_support_(true),
       hdp_flush_support_(false),
+      gang_leader_(false),
+      is_ganged_(false),
       min_submission_size_(0) {
   std::memset(&queue_resource_, 0, sizeof(queue_resource_));
 }