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/CLBatchNormalizationLayer.h b/arm_compute/runtime/CL/functions/CLBatchNormalizationLayer.h
index d84ba69..127de10 100644
--- a/arm_compute/runtime/CL/functions/CLBatchNormalizationLayer.h
+++ b/arm_compute/runtime/CL/functions/CLBatchNormalizationLayer.h
@@ -71,12 +71,12 @@
      * @param[in] gamma   Gamma values tensor info. 1 dimension with size equal to the feature maps [FM]. Data types supported: Same as @p input
      * @param[in] epsilon Small value to avoid division with zero.
      *
-     * @return an error status
+     * @return a status
      */
-    static Error validate(const ITensorInfo *input, const ITensorInfo *output,
-                          const ITensorInfo *mean, const ITensorInfo *var,
-                          const ITensorInfo *beta, const ITensorInfo *gamma,
-                          float epsilon);
+    static Status validate(const ITensorInfo *input, const ITensorInfo *output,
+                           const ITensorInfo *mean, const ITensorInfo *var,
+                           const ITensorInfo *beta, const ITensorInfo *gamma,
+                           float epsilon);
 
     // Inherited methods overridden:
     void run() override;