cifs: clear server inode number flag while autodisabling

Fix the commit ec06aedd44 that intended to turn off querying for server inode
numbers when server doesn't consistently support inode numbers. Presumably
the commit didn't actually clear the CIFS_MOUNT_SERVER_INUM flag, perhaps a
typo.

Signed-off-by: Suresh Jayaraman <sjayaraman@suse.de>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>

fs/cifs/misc.c

@@ -720,7 +720,7 @@ void
 cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb)
 {
 	if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
-		cifs_sb->mnt_cifs_flags &= CIFS_MOUNT_SERVER_INUM;
+		cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
 		cERROR(1, ("Autodisabling the use of server inode numbers on "
 			   "%s. This server doesn't seem to support them "
 			   "properly. Hardlinks will not be recognized on this "