COMPMID-765: Fixed clangtidy warnings.

Change-Id: I83d0f2bc8e0ebfdc0b60931f2c5acf0469caf886
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/118696
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/runtime/NEON/functions/NEConvolutionLayer.h b/arm_compute/runtime/NEON/functions/NEConvolutionLayer.h
index f7a83d8..f65e7ef 100644
--- a/arm_compute/runtime/NEON/functions/NEConvolutionLayer.h
+++ b/arm_compute/runtime/NEON/functions/NEConvolutionLayer.h
@@ -98,7 +98,7 @@
 {
 public:
     /** Constructor */
-    NEConvolutionLayer(std::shared_ptr<IMemoryManager> memory_manager = nullptr);
+    NEConvolutionLayer(const std::shared_ptr<IMemoryManager> &memory_manager = nullptr);
 
     /** Set the input and output tensors.
      *