fs: btrfs: Do not free multi when guaranteed to be NULL

multi is guaranteed to be NULL in the first two error exit paths so the
attempt to free it is not needed. Remove those calls.

This issue found by Smatch.

Signed-off-by: Andrew Goodbody <andrew.goodbody@linaro.org>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 5726981b19c063d5248e747856343f245dfc37fd..71b0b55b9c618f07e817c92debd944433d560ef8 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -972,12 +972,10 @@ int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
 again:
        ce = search_cache_extent(&map_tree->cache_tree, logical);
        if (!ce) {
-               kfree(multi);
                *length = (u64)-1;
                return -ENOENT;
        }
        if (ce->start > logical) {
-               kfree(multi);
                *length = ce->start - logical;
                return -ENOENT;
        }