COMPMID-417: Fix clang-tidy failures for 32-bit runs

Change-Id: I2fbb6dda1c281627a4d64dce3b4c4d2ebaa8d022
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/89289
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/src/core/NEON/kernels/NEPixelWiseMultiplicationKernel.cpp b/src/core/NEON/kernels/NEPixelWiseMultiplicationKernel.cpp
index 40dcc71..19d45e2 100644
--- a/src/core/NEON/kernels/NEPixelWiseMultiplicationKernel.cpp
+++ b/src/core/NEON/kernels/NEPixelWiseMultiplicationKernel.cpp
@@ -335,9 +335,6 @@
 template <bool is_scale255, bool is_sat>
 void mul_F16_F16_F16_n(const void *__restrict input1_ptr, const void *__restrict input2_ptr, void *__restrict output_ptr, float scale)
 {
-    ARM_COMPUTE_UNUSED(input1_ptr);
-    ARM_COMPUTE_UNUSED(input2_ptr);
-    ARM_COMPUTE_UNUSED(output_ptr);
 #ifdef ARM_COMPUTE_ENABLE_FP16
     const auto          input1    = static_cast<const float16_t *__restrict>(input1_ptr);
     const auto          input2    = static_cast<const float16_t *__restrict>(input2_ptr);
@@ -354,6 +351,10 @@
     };
     vst2q_f16(output, result);
 #else  /* ARM_COMPUTE_ENABLE_FP16 */
+    ARM_COMPUTE_UNUSED(input1_ptr);
+    ARM_COMPUTE_UNUSED(input2_ptr);
+    ARM_COMPUTE_UNUSED(output_ptr);
+    ARM_COMPUTE_UNUSED(scale);
     ARM_COMPUTE_ERROR("Not supported. Recompile the library with arch=arm64-v8.2-a.");
 #endif /* ARM_COMPUTE_ENABLE_FP16 */
 }