ASoC: samsung: spdif: remove unnecessary check of mem_res

The resource is checked in probe function, so there is
no need do this check in remove function.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220510124749.2663874-1-yangyingliang@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/spdif.c

@@ -467,8 +467,7 @@ static int spdif_remove(struct platform_device *pdev)
 	iounmap(spdif->regs);
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (mem_res)
-		release_mem_region(mem_res->start, resource_size(mem_res));
+	release_mem_region(mem_res->start, resource_size(mem_res));
 
 	clk_disable_unprepare(spdif->sclk);
 	clk_disable_unprepare(spdif->pclk);