[PATCH v2] drm/amdkfd: Fix variable dereferenced before NULL check in 'kfd_dbg_trap_device_snapshot()'

[Srinivasan Shanmugam]

Fixes the below:
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_debug.c:1024 
kfd_dbg_trap_device_snapshot() warn: variable dereferenced before check 
'entry_size' (see line 1021)

Cc: Felix Kuehling <felix.kuehl...@amd.com>
Cc: Christian König <christian.koe...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmu...@amd.com>
---
v2:
 - Changed from u32 to unit32_t for consistency (Felix) 

 drivers/gpu/drm/amd/amdkfd/kfd_debug.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
index 9ec750666382..d889e3545120 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug.c
@@ -1018,12 +1018,14 @@ int kfd_dbg_trap_device_snapshot(struct kfd_process 
*target,
                uint32_t *entry_size)
 {
        struct kfd_dbg_device_info_entry device_info;
-       uint32_t tmp_entry_size = *entry_size, tmp_num_devices;
+       uint32_t tmp_entry_size, tmp_num_devices;
        int i, r = 0;
 
        if (!(target && user_info && number_of_device_infos && entry_size))
                return -EINVAL;
 
+       tmp_entry_size = *entry_size;
+
        tmp_num_devices = min_t(size_t, *number_of_device_infos, 
target->n_pdds);
        *number_of_device_infos = target->n_pdds;
        *entry_size = min_t(size_t, *entry_size, sizeof(device_info));
-- 
2.34.1