Unmount MNTPNT before escaping quotes/backslashes

The escaping is needed to print the string with quotes, but would break
the umount command.

Signed-off-by: Jan Dubois <jan.dubois@suse.com>
(cherry picked from commit a782327)
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

Author: jandubois

pkg/cidata/cidata.TEMPLATE.d/boot/04-persistent-data-volume.sh

@@ -29,12 +29,12 @@ for DIR in ${DATADIRS}; do
 		[ "${MNTTYPE}" = "ext4" ] && continue
 		[ "${MNTTYPE}" = "tmpfs" ] && continue
 		MNTOPTS="$(echo "${LINE}" | awk '{print $4}')"
-		MNTPNT=${MNTPNT//\\/\\\\}
-		MNTPNT=${MNTPNT//\"/\\\"}
-		echo "mount -t \"${MNTTYPE}\" -o \"${MNTOPTS}\" \"${MNTDEV}\" \"${MNTPNT}\"" >>/mnt.sh
 		# Before mv, unmount filesystems (virtiofs, 9p, etc.) below "${DIR}", otherwise host mounts will be wiped out
 		# https://github.com/rancher-sandbox/rancher-desktop/issues/6582
 		umount "${MNTPNT}" || exit 1
+		MNTPNT=${MNTPNT//\\/\\\\}
+		MNTPNT=${MNTPNT//\"/\\\"}
+		echo "mount -t \"${MNTTYPE}\" -o \"${MNTOPTS}\" \"${MNTDEV}\" \"${MNTPNT}\"" >>/mnt.sh
 	done </proc/mounts
 done
 chmod +x /mnt.sh