NetworkPkg: Reset DHCP Service Binding IO Status on Stop

Resets DhcpSb->IoStatus on stop to prevent a stale state from
persisting which might impact future operations dependent on
the IO status.

Co-authored-by: Wenbo Hou <[email protected]>
Signed-off-by: Michael Kubacki <[email protected]>

Author: 2 people

NetworkPkg/Dhcp4Dxe/Dhcp4Impl.c

@@ -1087,6 +1087,7 @@ EfiDhcp4Stop (
 
   DhcpSb->DhcpState    = Dhcp4Stopped;
   DhcpSb->ServiceState = DHCP_UNCONFIGED;
+  DhcpSb->IoStatus     = EFI_NOT_STARTED;
 
   gBS->RestoreTPL (OldTpl);
   return EFI_SUCCESS;