[Intel-gfx] [PATCH] drm/i915: Fix a possible use of uninitialized variable in remap_io_sg()

[Christoph Hellwig]

On Thu, May 13, 2021 at 04:28:41PM -0700, José Roberto de Souza wrote:
> If the do while loop breaks in 'if (!sg_dma_len(sgl))' in the first
> iteration, err is uninitialized causing a wrong call to zap_vma_ptes().

But scatterlist must have at least one valid segment.  So while the
patch looks ok, please clearly mark that this is a false positive from
the static checker in the commit log.