drm/amd/pm: fix error code in smu_set_power_limit()

We should return -EINVAL instead of success if the "limit" is too high.

Fixes: e098bc96 ("drm/amd/pm: optimize the power related source code layout")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -2221,6 +2221,7 @@ static int smu_set_power_limit(void *handle, uint32_t limit)
 		dev_err(smu->adev->dev,
 			"New power limit (%d) is over the max allowed %d\n",
 			limit, smu->max_power_limit);
+		ret = -EINVAL;
 		goto out;
 	}