media: c8sectpfe: Remove unneeded NULL check before clk_disable_unprepare

clk_disable_unprepare() already checks NULL by using IS_ERR_OR_NULL.
Remove unneeded NULL check for fei->c8sectpfeclk.

Link: https://lore.kernel.org/linux-media/20220516131254.13816-1-wanjiabing@vivo.comSigned-off-by: Wan Jiabing <wanjiabing@vivo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/st/sti/c8sectpfe/c8sectpfe-core.c

@@ -907,8 +907,7 @@ static int c8sectpfe_remove(struct platform_device *pdev)
 	if (readl(fei->io + SYS_OTHER_CLKEN))
 		writel(0, fei->io + SYS_OTHER_CLKEN);
 
-	if (fei->c8sectpfeclk)
-		clk_disable_unprepare(fei->c8sectpfeclk);
+	clk_disable_unprepare(fei->c8sectpfeclk);
 
 	return 0;
 }