axicdma: examples: Reset error and done states before starting DMA

In SG interrupt example, reset error and done global states before
starting each DMA transaction. In the peripheral test, there could
be a scenario that axi_cdma_0 test fails, modifies these global
states and report an error. Next axi_cdma_1 test executes and
passes but if global states are not reset it will report false
error which should be fixed.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

Acked-for-series: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com>

XilinxProcessorIPLib/drivers/axicdma/examples/xaxicdma_example_sg_intr.c

@@ -70,6 +70,7 @@
  *                     and typecasting buffer address(CR-995116).
  * 4.5   rsp  03/10/18 Fix compilation error in CheckData function when DEBUG
  *                     mode is enabled.
+ *                     Reset error and done states before starting the DMA.
  * </pre>
  *
  ****************************************************************************/
@@ -852,6 +853,9 @@ int XAxiCdma_SgIntrExample(XScuGic *IntcInstancePtr, XAxiCdma *InstancePtr,
 	 */
 	XAxiCdma_IntrEnable(InstancePtr, XAXICDMA_XR_IRQ_ALL_MASK);
 
+	Done = 0;
+	Error = 0;
+
 	/* Start the DMA transfer
 	 */
 	Status = DoTransfer(InstancePtr);