drm/msm: fix the CRASHDUMP_READ target of a6xx_get_shader_block()

Clang 14 in an (essentially) defconfig arm64 build for next-20240326
reports [1]:

    drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c:843:6: error:
    variable 'out' set but not used [-Werror,-Wunused-but-set-variable]

The variable `out` in these functions is meant to compute the `target` of
`CRASHDUMP_READ()`, but in this case only the initial value (`dumper->iova
+ A6XX_CD_DATA_OFFSET`) was being passed.

Thus use `out` as it was intended by Connor [2].

There was an alternative patch at [3] that removed the variable
altogether, but that would only use the initial value.

Fixes: 64d6255 ("drm/msm: More fully implement devcoredump for a7xx")
Closes: https://lore.kernel.org/lkml/CANiq72mjc5t4n25SQvYSrOEhxxpXYPZ4pPzneSJHEnc3qApu2Q@mail.gmail.com/ [1]
Link: https://lore.kernel.org/lkml/CACu1E7HhCKMJd6fixZSPiNAz6ekoZnkMTHTcLFVmbZ-9VoLxKg@mail.gmail.com/ [2]
Link: https://lore.kernel.org/lkml/[email protected]/ [3]
Signed-off-by: Miguel Ojeda <[email protected]>
Reviewed-by: Abhinav Kumar <[email protected]>
Patchwork: https://patchwork.freedesktop.org/patch/584955/
Signed-off-by: Rob Clark <[email protected]>

Author: ojeda

drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c

@@ -852,7 +852,7 @@ static void a6xx_get_shader_block(struct msm_gpu *gpu,
 			(block->type << 8) | i);
 
 		in += CRASHDUMP_READ(in, REG_A6XX_HLSQ_DBG_AHB_READ_APERTURE,
-			block->size, dumper->iova + A6XX_CD_DATA_OFFSET);
+			block->size, out);
 
 		out += block->size * sizeof(u32);
 	}