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drm/msm/dpu: Fix smatch warnings about variable dereferenced before check

Fix below smatch warnings:
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp_v13.c:161 dpu_hw_sspp_setup_pe_config_v13()
warn: variable dereferenced before check 'ctx' (see line 159)

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Closes: https://lore.kernel.org/r/202601252214.oEaY3UZM-lkp@intel.com/
Signed-off-by: sunliming <sunliming@kylinos.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/701853/
Link: https://lore.kernel.org/r/20260130053615.24886-1-sunliming@linux.dev
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

authored by

sunliming and committed by
Dmitry Baryshkov b1dcc804 6f6f3535

+3 -1
+3 -1
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp_v13.c
··· 156 156 u8 color; 157 157 u32 lr_pe[4], tb_pe[4]; 158 158 const u32 bytemask = 0xff; 159 - u32 offset = ctx->cap->sblk->sspp_rec0_blk.base; 159 + u32 offset; 160 160 161 161 if (!ctx || !pe_ext) 162 162 return; 163 + 164 + offset = ctx->cap->sblk->sspp_rec0_blk.base; 163 165 164 166 c = &ctx->hw; 165 167 /* program SW pixel extension override for all pipes*/