rbd: remove false error condition check in genVolFromVolID
rbd: remove false error condition check in genVolFromVolID

The error check condition in genVolFromID() is always false as far as
code reading/workflow goes. Removing it for the same reason.

Signed-off-by: Humble Chirammal <dc8ba7e82a7df22725dedec9b10c7aaab9ec713f@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi