apparmor: remove useless checks for NULL ->mnt

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c
index 7ae5405..eadaa58 100644
--- a/security/apparmor/lsm.c
+++ b/security/apparmor/lsm.c
@@ -215,7 +215,7 @@
 	struct inode *inode = d_backing_inode(dentry);
 	struct path_cond cond = { };
 
-	if (!inode || !dir->mnt || !mediated_filesystem(dentry))
+	if (!inode || !mediated_filesystem(dentry))
 		return 0;
 
 	cond.uid = inode->i_uid;
@@ -239,7 +239,7 @@
 {
 	struct path_cond cond = { current_fsuid(), mode };
 
-	if (!dir->mnt || !mediated_filesystem(dir->dentry))
+	if (!mediated_filesystem(dir->dentry))
 		return 0;
 
 	return common_perm_dir_dentry(op, dir, dentry, mask, &cond);