Fix compiler warnings in dynamic fusion

Resolves: COMPMID-5686

Change-Id: I608c359583c44f2f04f29faddd1c6b38a381de60
Signed-off-by: SiCong Li <sicong.li@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8562
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/dynamic_fusion/runtime/gpu/cl/ClWorkloadRuntime.cpp b/src/dynamic_fusion/runtime/gpu/cl/ClWorkloadRuntime.cpp
index 549c6d4..f14f66d 100644
--- a/src/dynamic_fusion/runtime/gpu/cl/ClWorkloadRuntime.cpp
+++ b/src/dynamic_fusion/runtime/gpu/cl/ClWorkloadRuntime.cpp
@@ -287,15 +287,20 @@
         switch(stage)
         {
             case UnitWorkloadStage::Stage::Run:
+            {
                 _impl->_kernels.emplace(work.id(), std::move(k));
                 break;
+            }
             case UnitWorkloadStage::Stage::Prepare:
+            {
                 _impl->_kernels_prep.emplace(work.id(), std::move(k));
                 break;
+            }
             default:
+            {
                 ARM_COMPUTE_ERROR("Invalid unit workload stage");
+            }
         }
-        break;
     }
     // Create auxiliary tensor objects
     create_aux_tensors(&_impl->_aux_tensors, _impl->_source_code);