COMPMID-1008: Fix Doxygen issues

Change-Id: Ie73d8771f85d1f5b059f3a56f1bbd73c98e94a38
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124723
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/core/TensorInfo.h b/arm_compute/core/TensorInfo.h
index 97f9d03..f8cfb35 100644
--- a/arm_compute/core/TensorInfo.h
+++ b/arm_compute/core/TensorInfo.h
@@ -210,6 +210,8 @@
      * @param[in] hog_info HOG's metadata used to allocate normalized HOG space
      * @param[in] width    Width of the 2D tensor where the HOG descriptor will be computed on
      * @param[in] height   Height of the 2D tensor where the HOG descriptor will be computed on
+     *
+     * @return Total allocation size including padding in bytes.
      */
     size_t init_auto_padding(const HOGInfo &hog_info, unsigned int width, unsigned int height);