adjust the installkernel function to make it return correct value

The old implementation in installkernel() will not return success when
added wdt module is not iTCO_wdt. The returned value is related to the
comparison. This is not correct and will cause kdump load failed.

Now move the exact wdt module inserting to the right place, this can
be fixed.

Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>

dracut-module-setup.sh

@@ -489,7 +489,7 @@ install() {
 installkernel() {
     wdt=$(lsmod|cut -f1 -d' '|grep "wdt$")
     if [ -n "$wdt" ]; then
-        instmods $wdt
         [ "$wdt" = "iTCO_wdt" ] && instmods lpc_ich
+        instmods $wdt
     fi
 }