The cast to uint8_t happens before the right shift so this always sets
.m3arb to zero.  The cast is actually a no-op so we can remove it.
Fixes: 3bace3591493 ('drm/amd/powerplay: add hardware manager sub-component')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
 
        ps->memory.dllOff = (0 != tmp);
 
-       ps->memory.m3arb = (uint8_t)(le32_to_cpu(pnon_clock_info->ulCapsAndSettings) &
-                                               ATOM_PPLIB_M3ARB_MASK) >> ATOM_PPLIB_M3ARB_SHIFT;
+       ps->memory.m3arb = (le32_to_cpu(pnon_clock_info->ulCapsAndSettings) &
+                           ATOM_PPLIB_M3ARB_MASK) >> ATOM_PPLIB_M3ARB_SHIFT;
 
        ps->temperatures.min = PP_TEMPERATURE_UNITS_PER_CENTIGRADES *
                                     pnon_clock_info->ucMinTemperature;