drbd: drbd_nla_check_mandatory(): Need to remove the DRBD_GENLA_F_MANDATORY flag first

We need to remove the flag before checking for valid types.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h
index 58edd403a3ff..357f2ad403b1 100644
--- a/include/linux/genl_magic_func.h
+++ b/include/linux/genl_magic_func.h
@@ -158,9 +158,9 @@ static inline int drbd_nla_check_mandatory(int maxtype, struct nlattr *nla)
 
         nla_for_each_attr(nla, head, len, rem) {
                 if (nla->nla_type & DRBD_GENLA_F_MANDATORY) {
+                        nla->nla_type &= ~DRBD_GENLA_F_MANDATORY;
                         if (nla_type(nla) > maxtype)
                                 return -EOPNOTSUPP;
-                        nla->nla_type &= ~DRBD_GENLA_F_MANDATORY;
                 }
         }
         return 0;