fix(SinkA): cmoAll FSM returns to IDLE when finished

Author: yulightenyu

src/main/scala/coupledL2/SinkA.scala

@@ -188,6 +188,11 @@ class SinkA(implicit p: Parameters) extends L2Module {
   when (stateVal === sWAITMSHR && !mshrValid) {
     state.foreach { _ := sCMOREQ }
   }
+  when (stateVal === sDONE && !l2Flush) {
+    state.foreach { _ := sIDLE }
+    set.foreach { _ := 0.U }
+    way.foreach { _ := 0.U }
+  }
 
   // Performance counters
   // num of reqs