fix(encrypt): close encrypted volume if it is opened

In normal process of attaching a volume via CSI, the encrypted volume
should be in closed or inactivated state before Longhorn attempts to
open it.

ref: longhorn/longhorn 9385

Signed-off-by: James Lu <james.lu@suse.com>

csi/crypto/crypto.go

@@ -97,8 +97,10 @@ func EncryptVolume(devicePath, passphrase string, cryptoParams *EncryptParams) e
 // OpenVolume opens volume so that it can be used by the client.
 func OpenVolume(volume, devicePath, passphrase string) error {
 	if isOpen, _ := IsDeviceOpen(VolumeMapper(volume)); isOpen {
-		logrus.Infof("Device %s is already opened at %s", devicePath, VolumeMapper(volume))
-		return nil
+		logrus.Infof("Device %s is already opened at %s, and close it first", devicePath, VolumeMapper(volume))
+		if err := CloseVolume(volume); err != nil {
+			return err
+		}
 	}
 
 	namespaces := []lhtypes.Namespace{lhtypes.NamespaceMnt, lhtypes.NamespaceIpc}