drm/amdgpu/ucode: Remove firmware load type check in amdgpu_ucode_free_bo

When psp_hw_init failed, it will set the load_type to AMDGPU_FW_LOAD_DIRECT.
During amdgpu_device_ip_fini, amdgpu_ucode_free_bo checks that load_type is
AMDGPU_FW_LOAD_DIRECT and skips deallocating fw_buf causing memory leak.
Remove load_type check in amdgpu_ucode_free_bo.

Signed-off-by: Alice Wong <shiwei.wong@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>