Multi-Attach error for volume "pvc "Volume is already exclusively attached to one node and can't be attached to another"

Just simply, scale down your deployment and then scale up

Scale down:
[local@jump Nilesh]$ oc -n scale deployment --replicas=0

Scale up:
[local@jump Nilesh]$ oc -n scale deployment --replicas=1

Pods status
mysql-57 1/1 Running 8m38s