Re: [PATCH][next] btrfs: fix check for memory allocation failure of ret->path

[David Sterba]

On Tue, Apr 21, 2020 at 01:47:03PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Currently the memory allocation failure check for ret->path is checking
> that ret is null rather than ret->path.  Fix this by checking ret->path
> instead.
> 
> Addresses-Coverity: ("Dereference null return")
> Fixes: bd8bdc532152 ("btrfs: backref: introduce the skeleton of btrfs_backref_iter")

As this is still in development branch, fixup folded in. Thanks.