drm/msm/dpu: drop extra aspace checks in dpu_formats

The DPU driver isn't expected to be used without an IOMMU. Thus the
aspace will be always present. Not to mention that mdp4/mdp5 drivers
call msm_framebuffer_iova() without such checks, as the whole
msm_framebuffer layer is expected to support both IOMMU and IOMMU-less
configurations.

Drop these useless if (aspace) checks.

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/612249/
Link: https://lore.kernel.org/r/20240903-dpu-mode-config-width-v6-6-617e1ecc4b7a@linaro.org

Author: lumag

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

@@ -280,8 +280,7 @@ static int _dpu_format_populate_addrs_ubwc(
 		return -EINVAL;
 	}
 
-	if (aspace)
-		base_addr = msm_framebuffer_iova(fb, aspace, 0);
+	base_addr = msm_framebuffer_iova(fb, aspace, 0);
 	if (!base_addr) {
 		DRM_ERROR("failed to retrieve base addr\n");
 		return -EFAULT;
@@ -376,9 +375,7 @@ static int _dpu_format_populate_addrs_linear(
 
 	/* Populate addresses for simple formats here */
 	for (i = 0; i < layout->num_planes; ++i) {
-		if (aspace)
-			layout->plane_addr[i] =
-				msm_framebuffer_iova(fb, aspace, i);
+		layout->plane_addr[i] = msm_framebuffer_iova(fb, aspace, i);
 		if (!layout->plane_addr[i]) {
 			DRM_ERROR("failed to retrieve base addr\n");
 			return -EFAULT;