Two minor code clean-ups for Smack.

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Merge tag 'Smack-for-6.0' of https://github.com/cschaufler/smack-next

Pull msack updates from Casey Schaufler:
 "Two minor code clean-ups for Smack.

  One removes a touch of dead code and the other replaces an instance of
  kzalloc + strncpy with kstrndup"

* tag 'Smack-for-6.0' of https://github.com/cschaufler/smack-next:
  smack: Remove the redundant lsm_inode_alloc
  smack: Replace kzalloc + strncpy with kstrndup

security/smack/smack_access.c

@@ -465,12 +465,9 @@ char *smk_parse_smack(const char *string, int len)
 	if (i == 0 || i >= SMK_LONGLABEL)
 		return ERR_PTR(-EINVAL);
 
-	smack = kzalloc(i + 1, GFP_NOFS);
-	if (smack == NULL)
+	smack = kstrndup(string, i, GFP_NOFS);
+	if (!smack)
 		return ERR_PTR(-ENOMEM);
-
-	strncpy(smack, string, i);
-
 	return smack;
 }
 

security/smack/smack_lsm.c

@@ -766,13 +766,6 @@ static int smack_set_mnt_opts(struct super_block *sb,
 	if (sp->smk_flags & SMK_SB_INITIALIZED)
 		return 0;
 
-	if (inode->i_security == NULL) {
-		int rc = lsm_inode_alloc(inode);
-
-		if (rc)
-			return rc;
-	}
-
 	if (!smack_privileged(CAP_MAC_ADMIN)) {
 		/*
 		 * Unprivileged mounts don't get to specify Smack values.