dmsquash-live/iso-scan: do the iso scan regardless of /dev/loop0

The loop driver could be a module and would never be loaded, so the
iso-scan never takes place.

To let the iso-scan happen, it is now placed into the initqueue/settled
unconditionally.

modules.d/90dmsquash-live/iso-scan.sh

@@ -10,7 +10,7 @@ isofile=$1
 
 [ -z "$isofile" ] && exit 1
 
-ismounted "/run/initramfs/isoscan" && exit 1
+ismounted "/run/initramfs/isoscan" && exit 0
 
 mkdir -p "/run/initramfs/isoscan"
 

modules.d/90dmsquash-live/parse-iso-scan.sh

@@ -7,8 +7,5 @@
 isofile=$(getarg iso-scan/filename)
 
 if [ -n "$isofile" ]; then
-    {
-        printf 'KERNEL=="loop0", RUN+="/sbin/initqueue --settled --unique /sbin/iso-scan %s"\n' \
-            "'${isofile}'"
-    } >> /etc/udev/rules.d/99-isofile-mount.rules
+    /sbin/initqueue --settled --unique /sbin/iso-scan "$isofile"
 fi