btrfs: tests: fix chunk map leak after failure to add it to the tree

If we fail to add the chunk map to the fs mapping tree we exit
test_rmap_block() without freeing the chunk map. Fix this by adding a
call to btrfs_free_chunk_map() before exiting the test function if the
call to btrfs_add_chunk_map() failed.

Fixes: 7dc66ab ("btrfs: use a dedicated data structure for chunk maps")
CC: [email protected] # 6.12+
Reviewed-by: Boris Burkov <[email protected]>
Signed-off-by: Filipe Manana <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>

Author: fdmanana

fs/btrfs/tests/extent-map-tests.c

@@ -1045,6 +1045,7 @@ static int test_rmap_block(struct btrfs_fs_info *fs_info,
 	ret = btrfs_add_chunk_map(fs_info, map);
 	if (ret) {
 		test_err("error adding chunk map to mapping tree");
+		btrfs_free_chunk_map(map);
 		goto out_free;
 	}