drm/amd/pm: Fix a potential gpu_metrics_table memory leak

Memory is allocated for gpu_metrics_table in
smu_v13_0_4_init_smc_tables(), but not freed in
smu_v13_0_4_fini_smc_tables(). This may cause memory leaks, fix it.

Reviewed-by: Evan Quan <[email protected]>
Signed-off-by: Zhen Ni <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

Author: nizhenth

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c

@@ -198,6 +198,9 @@ static int smu_v13_0_4_fini_smc_tables(struct smu_context *smu)
 	kfree(smu_table->watermarks_table);
 	smu_table->watermarks_table = NULL;
 
+	kfree(smu_table->gpu_metrics_table);
+	smu_table->gpu_metrics_table = NULL;
+
 	return 0;
 }