btrfs: return void from readahead_tree_block

Errors in readahead are not fatal and ignored elsewhere in the code.

Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
David Sterba 2014-06-15 00:49:36 +02:00
commit 6197d86eab
3 changed files with 4 additions and 8 deletions