COMPMID-2098: Scope handling of memory group resources.

Change-Id: Ie945526bd7845301458039edf3129253c1808505
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/938
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp b/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
index 52973ba..d3c3f98 100644
--- a/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
+++ b/src/runtime/CL/functions/CLWinogradConvolutionLayer.cpp
@@ -204,7 +204,7 @@
 {
     prepare();
 
-    _memory_group.acquire();
+    MemoryGroupResourceScope scope_mg(_memory_group);
 
     // Run input transform
     _input_transform.run();
@@ -214,8 +214,6 @@
 
     // Run output transform
     CLScheduler::get().enqueue(_output_transform);
-
-    _memory_group.release();
 }
 
 void CLWinogradConvolutionLayer::prepare()