drm/amdkfd: err_pin_bo path leaks kfd_bo_list

Refactor userptr and pin_bo path to make it less confusing, move
err_pin_bo label up to remove mem from process_info kfd_bo_list.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c

@@ -1559,13 +1559,8 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		ret = init_user_pages(*mem, user_addr);
 		if (ret)
 			goto allocate_init_user_pages_failed;
-	}
-
-	if (offset)
-		*offset = amdgpu_bo_mmap_offset(bo);
-
-	if (flags & (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL |
-			KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP)) {
+	} else  if (flags & (KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL |
+				KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP)) {
 		ret = amdgpu_amdkfd_gpuvm_pin_bo(bo, AMDGPU_GEM_DOMAIN_GTT);
 		if (ret) {
 			pr_err("Pinning MMIO/DOORBELL BO during ALLOC FAILED\n");
@@ -1575,11 +1570,14 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
 		bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT;
 	}
 
+	if (offset)
+		*offset = amdgpu_bo_mmap_offset(bo);
+
 	return 0;
 
 allocate_init_user_pages_failed:
-	remove_kgd_mem_from_kfd_bo_list(*mem, avm->process_info);
 err_pin_bo:
+	remove_kgd_mem_from_kfd_bo_list(*mem, avm->process_info);
 	drm_vma_node_revoke(&gobj->vma_node, drm_priv);
 err_node_allow:
 	/* Don't unreserve system mem limit twice */