COMPMID-556: Rename Error to Status and inverse logic

Change-Id: Ib57d4f7177cc6179302bda7ad870acb8bd3825f5
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/112115
Tested-by: BSG Visual Compute Jenkins server to access repositories on http://mpd-gerrit.cambridge.arm.com <bsgcomp@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h b/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
index 4fdcd75..d57bfda 100644
--- a/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
+++ b/arm_compute/runtime/CL/functions/CLPixelWiseMultiplication.h
@@ -57,10 +57,10 @@
      * @param[in] overflow_policy Overflow policy. Supported overflow policies: Wrap, Saturate
      * @param[in] rounding_policy Rounding policy. Supported rounding modes: to zero, to nearest even.
      *
-     * @return an error status
+     * @return a status
      */
-    static Error validate(const ITensorInfo *input1, const ITensorInfo *input2, const ITensorInfo *output, float scale,
-                          ConvertPolicy overflow_policy, RoundingPolicy rounding_policy);
+    static Status validate(const ITensorInfo *input1, const ITensorInfo *input2, const ITensorInfo *output, float scale,
+                           ConvertPolicy overflow_policy, RoundingPolicy rounding_policy);
 };
 }
 #endif /*__ARM_COMPUTE_CLPIXELWISEMULTIPLICATION_H__ */