[v1] drm/msm/disp/dpu1: fix warning reported by kernel bot in dpu driver

[Kalyan Thota <kalyan_t@codeaurora.org>]

Fix a warning, pointing to an early deference of a variable before
check. This bug was introduced in the following commit.

commit 4259ff7ae509
("drm/msm/dpu: add support for pcc color block in dpu driver")

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalyan Thota <kalyan_t@codeaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
index a7a2453..0f9974c 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
@@ -26,10 +26,16 @@ static void dpu_setup_dspp_pcc(struct dpu_hw_dspp *ctx,
 		struct dpu_hw_pcc_cfg *cfg)
 {
 
-	u32 base = ctx->cap->sblk->pcc.base;
+	u32 base;
 
-	if (!ctx || !base) {
-		DRM_ERROR("invalid ctx %pK pcc base 0x%x\n", ctx, base);
+	if (!ctx) {
+		DRM_ERROR("invalid dspp ctx %pK\n", ctx);
+		return;
+	}
+
+	base = ctx->cap->sblk->pcc.base;
+	if (!base) {
+		DRM_ERROR("invalid pcc base 0x%x\n", base);
 		return;
 	}
 
-- 
2.7.4