crypto: s5p-sss - remove redundant null check

Because clk_disable_unprepare already checked NULL clock
parameter, so the additional checks are unnecessary, just remove them.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Kamil Konieczny <k.konieczny@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/s5p-sss.c

@@ -2307,7 +2307,6 @@ static int s5p_aes_probe(struct platform_device *pdev)
 	tasklet_kill(&pdata->tasklet);
 
 err_irq:
-	if (pdata->pclk)
 	clk_disable_unprepare(pdata->pclk);
 
 err_clk:
@@ -2338,7 +2337,6 @@ static int s5p_aes_remove(struct platform_device *pdev)
 		pdata->use_hash = false;
 	}
 
-	if (pdata->pclk)
 	clk_disable_unprepare(pdata->pclk);
 
 	clk_disable_unprepare(pdata->clk);