libmultipath: libmp_mapinfo(): return DMP_NO_MATCH for multi-target maps

multi-target maps are more like maps with a single non-multipath
target than like maps with no target at all.

Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>

libmultipath/devmapper.c

@@ -719,7 +719,7 @@ static int libmp_mapinfo__(int flags, mapid_t id, mapinfo_t info, const char *ma
 		if (dm_get_next_target(dmt, NULL, &start, &length,
 				       &target_type, &params) != NULL) {
 			condlog(2, "%s: map %s has multiple targets", fname__, map_id);
-			return DMP_NOT_FOUND;
+			return DMP_NO_MATCH;
 		}
 		if (!params) {
 			condlog(2, "%s: map %s has no targets", fname__, map_id);

tests/mapinfo.c

@@ -870,7 +870,7 @@ static void test_mapinfo_bad_next_target_01(void **state)
 	rc = libmp_mapinfo(DM_MAP_BY_NAME,
 			   (mapid_t) { .str = "foo", },
 			   (mapinfo_t) { .size = &size });
-	assert_int_equal(rc, DMP_NOT_FOUND);
+	assert_int_equal(rc, DMP_NO_MATCH);
 }
 
 static void test_mapinfo_bad_next_target_02(void **state)