serial: mxs-auart: Use PTR_ERR_OR_ZERO() to simplify the code

Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR.

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 680270b85ff7cf6499227aa5f47ee4a0243426cf..ec0ab33efd9dad24ff72d76fb247ce535807548e 100644 (file)
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -1510,10 +1510,7 @@ static int mxs_get_clks(struct mxs_auart_port *s,
 
        if (!is_asm9260_auart(s)) {
                s->clk = devm_clk_get(&pdev->dev, NULL);
-               if (IS_ERR(s->clk))
-                       return PTR_ERR(s->clk);
-
-               return 0;
+               return PTR_ERR_OR_ZERO(s->clk);
        }
 
        s->clk = devm_clk_get(s->dev, "mod");