[PATCH v4] amdgpu: remove unnecessary condition check

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There is no need to if check again, maybe we could merge
into the above else branch.

Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>

Changes since V1:
*commit message improve
*code style refactoring

Changes since V2:
*code style adjust

Changes since V3:
*find the best way to merge unnecessary if/else check branch

Link for V1:
*https://lore.kernel.org/patchwork/patch/1226587/
---
 .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c  | 20 +++++++++----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 9dff792c9290..acb612c53b9c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -660,15 +660,15 @@ static int reserve_bo_and_vm(struct kgd_mem *mem,
 
 	ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
 				     false, &ctx->duplicates);
-	if (!ret)
-		ctx->reserved = true;
-	else {
-		pr_err("Failed to reserve buffers in ttm\n");
+	if (ret) {
+		pr_err("Failed to reserve buffers in ttm.\n");
 		kfree(ctx->vm_pd);
 		ctx->vm_pd = NULL;
+		return ret;
 	}
 
-	return ret;
+	ctx->reserved = true;
+	return 0;
 }
 
 /**
@@ -733,17 +733,15 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
 
 	ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
 				     false, &ctx->duplicates);
-	if (!ret)
-		ctx->reserved = true;
-	else
-		pr_err("Failed to reserve buffers in ttm.\n");
-
 	if (ret) {
+		pr_err("Failed to reserve buffers in ttm.\n");
 		kfree(ctx->vm_pd);
 		ctx->vm_pd = NULL;
+		return ret;
 	}
 
-	return ret;
+	ctx->reserved = true;
+	return 0;
 }
 
 /**
-- 
2.26.2

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