incompatible integer to pointer conversion

Sorry, this is really a basic "programming in C 101" question.
But for the life of me, I'm not getting it. The source in
question:

LDAP *setup_ldap()
{
	LDAP *ret;
	int n;

	if (debug) fprintf(stderr, "radldap: Setting up LDAP for %s, port %d\n",
			   host, port);
	if (!(ret = ldap_init(host, port))) {
		fprintf(stderr, "radldap: Could not initialize LDAP!\n");
		_exit(2);
	}

Now *you* can probably already see the problem. But this is what's returned:

radldap.c:302:12: error: incompatible integer to pointer conversion assigning 
to 'LDAP *' (aka 'struct ldap *') from 'int' [-Wint-conversion]
   302 |         if (!(ret = ldap_init(host, port))) {
       |                   ^ ~~~~~~~~~~~~~~~~~~~~~

Thanks in advance for any hints, or pointers.