remote/coordinator: fix scheduling for missing allocated places

Stop processing a reservation allocation after its allocated place is missing and the reservation has been marked invalid.
This avoids accessing the missing place while scheduling reservations.

Signed-off-by: Asher Pemberton <asher.pemberton@arm.com>
Reviewed-by: Asher Pemberton <asher.pemberton@arm.com> # gatekeeper
Co-authored-by: Idan Saadon <idan.saadon@arm.com>

Author: asher-pem-arm

labgrid/remote/coordinator.py

@@ -986,6 +986,7 @@ def schedule_reservations(self):
                         res.allocations.clear()
                         res.refresh(300)
                         print(f"reservation ({res.owner}/{res.token}) is now {res.state.name}")
+                        break
                     if place.acquired is not None:
                         acquired_places.add(name)
                     assert name not in allocated_places, "conflicting allocation"