drm/amdgpu: clean up some inconsistent indenting

Eliminate the follow smatch warnings:
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:3504 amdgpu_device_init()
warn: inconsistent indenting
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1716
amdgpu_ras_error_status_query() warn: if statement not indented
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:1058 amdgpu_ras_error_inject()
warn: inconsistent indenting

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>