[PATCH libdrm] amdgpu: When couldn't find bo, need to return error.

[Emily Deng]

The startx will have segmant fault if return success.

SWDEV-163962

Change-Id: I56b189fa26efdcd1d96e5100af3f3e0b1208b0c3
Signed-off-by: Emily Deng <Emily.Deng at amd.com>
---
 amdgpu/amdgpu_bo.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/amdgpu/amdgpu_bo.c b/amdgpu/amdgpu_bo.c
index f25cacc..7e297fa 100644
--- a/amdgpu/amdgpu_bo.c
+++ b/amdgpu/amdgpu_bo.c
@@ -760,6 +760,7 @@ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev,
 				  uint64_t *offset_in_bo)
 {
 	uint32_t i;
+	int r = 0;
 	struct amdgpu_bo *bo;
 
 	if (cpu == NULL || size == 0)
@@ -787,10 +788,11 @@ int amdgpu_find_bo_by_cpu_mapping(amdgpu_device_handle dev,
 	} else {
 		*buf_handle = NULL;
 		*offset_in_bo = 0;
+		r = -errno;
 	}
 	pthread_mutex_unlock(&dev->bo_table_mutex);
 
-	return 0;
+	return r;
 }
 
 int amdgpu_create_bo_from_user_mem(amdgpu_device_handle dev,
-- 
2.7.4