SELinux: fix error code in policydb_init()

If hashtab_create() returns a NULL pointer then we should return -ENOMEM
but instead the current code returns success.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Serge Hallyn <serge.hallyn@canonical.com>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <pmoore@redhat.com>

security/selinux/ss/policydb.c

@@ -289,12 +289,16 @@ static int policydb_init(struct policydb *p)
 		goto out;
 
 	p->filename_trans = hashtab_create(filenametr_hash, filenametr_cmp, (1 << 10));
-	if (!p->filename_trans)
+	if (!p->filename_trans) {
+		rc = -ENOMEM;
 		goto out;
+	}
 
 	p->range_tr = hashtab_create(rangetr_hash, rangetr_cmp, 256);
-	if (!p->range_tr)
+	if (!p->range_tr) {
+		rc = -ENOMEM;
 		goto out;
+	}
 
 	ebitmap_init(&p->filename_trans_ttypes);
 	ebitmap_init(&p->policycaps);