iio: multiplexer: iio-mux: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20200829064726.26268-18-krzk@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c
index 6910218fdb0037b82488b5ed9ada013ff9697ebb..d54ae5cbe51b31ee94b35dd20b8c958232ba4b71 100644 (file)
--- a/drivers/iio/multiplexer/iio-mux.c
+++ b/drivers/iio/multiplexer/iio-mux.c
@@ -354,11 +354,9 @@ static int mux_probe(struct platform_device *pdev)
                return -ENODEV;
 
        parent = devm_iio_channel_get(dev, "parent");
-       if (IS_ERR(parent)) {
-               if (PTR_ERR(parent) != -EPROBE_DEFER)
-                       dev_err(dev, "failed to get parent channel\n");
-               return PTR_ERR(parent);
-       }
+       if (IS_ERR(parent))
+               return dev_err_probe(dev, PTR_ERR(parent),
+                                    "failed to get parent channel\n");
 
        sizeof_ext_info = iio_get_channel_ext_info_count(parent);
        if (sizeof_ext_info) {