drm/msm/dpu: drop temp variable from dpu_encoder_phys_cmd_init()

There is no need to assign a result to temp varable just to return it
two lines below. Drop the temporary variable.
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Abhinav Kumar <quic_abhinavk@quicinc.com> # sc7280
Patchwork: https://patchwork.freedesktop.org/patch/540637/
Link: https://lore.kernel.org/r/20230601172236.564445-7-dmitry.baryshkov@linaro.orgSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_cmd.c

@@ -756,15 +756,13 @@ struct dpu_encoder_phys *dpu_encoder_phys_cmd_init(
 {
 	struct dpu_encoder_phys *phys_enc = NULL;
 	struct dpu_encoder_phys_cmd *cmd_enc = NULL;
-	int ret = 0;
 
 	DPU_DEBUG("intf\n");
 
 	cmd_enc = kzalloc(sizeof(*cmd_enc), GFP_KERNEL);
 	if (!cmd_enc) {
-		ret = -ENOMEM;
 		DPU_ERROR("failed to allocate\n");
-		return ERR_PTR(ret);
+		return ERR_PTR(-ENOMEM);
 	}
 	phys_enc = &cmd_enc->base;