Fix warning about multipath if not needed

Although no device uses multipath, the module checks
for presence of the multipath binary first, printing a
warning if not present. This patch fixes the wrong ordering.

modules.d/90multipath/module-setup.sh

@@ -10,13 +10,14 @@ is_mpath() {
 # called by dracut
 check() {
     local _rootdev
-    # if there's no multipath binary, no go.
-    require_binaries multipath || return 1
 
     [[ $hostonly ]] || [[ $mount_needs ]] && {
         for_each_host_dev_and_slaves is_mpath || return 255
     }
 
+    # if there's no multipath binary, no go.
+    require_binaries multipath || return 1
+
     return 0
 }