APPBROWSER-359: Sync tensor in GC benchmark tests

Change-Id: I22c1aa92e70d6143bbcec90e9e7de9f1ce1c1e55
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/114635
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
diff --git a/tests/benchmark/fixtures/LeNet5Fixture.h b/tests/benchmark/fixtures/LeNet5Fixture.h
index 77a09d3..191daa2 100644
--- a/tests/benchmark/fixtures/LeNet5Fixture.h
+++ b/tests/benchmark/fixtures/LeNet5Fixture.h
@@ -57,6 +57,11 @@
         network.run();
     }
 
+    void sync()
+    {
+        network.sync();
+    }
+
     void teardown()
     {
         network.clear();