can: xilinx_can: clean up indentation issue

A statement is indented one level too deep, fix this.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Reviewed-by: NMichal Simek <michal.simek@xilinx.com>
Signed-off-by: NMarc Kleine-Budde <mkl@pengutronix.de>

drivers/net/can/xilinx_can.c

@@ -1119,7 +1119,7 @@ static void xcan_err_interrupt(struct net_device *ndev, u32 isr)
 				cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
 			}
 		}
-			priv->can.can_stats.bus_error++;
+		priv->can.can_stats.bus_error++;
 	}
 
 	if (skb) {