drm/amdgpu: fix smu ucode memleak (v2)

Properly release the smu ucode in powerplay.

v2: agd: add polaris as well
Signed-off-by: NMonk Liu <Monk.Liu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/smumgr/fiji_smumgr.c

@@ -1014,6 +1014,8 @@ static int fiji_smu_fini(struct pp_smumgr *smumgr)
 		kfree(smumgr->backend);
 		smumgr->backend = NULL;
 	}
+
+	cgs_rel_firmware(smumgr->device, CGS_UCODE_ID_SMU);
 	return 0;
 }
 

drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c

@@ -469,6 +469,7 @@ int polaris10_smu_fini(struct pp_smumgr *smumgr)
 		kfree(smumgr->backend);
 		smumgr->backend = NULL;
 	}
+	cgs_rel_firmware(smumgr->device, CGS_UCODE_ID_SMU);
 	return 0;
 }
 

drivers/gpu/drm/amd/powerplay/smumgr/tonga_smumgr.c

@@ -337,6 +337,8 @@ static int tonga_smu_fini(struct pp_smumgr *smumgr)
 		kfree(smumgr->backend);
 		smumgr->backend = NULL;
 	}
+
+	cgs_rel_firmware(smumgr->device, CGS_UCODE_ID_SMU);
 	return 0;
 }