Use dev_err_probe() to simplify the error path and unify a message
template.

Using this helper is totally fine even if err is known to never
be -EPROBE_DEFER.

The benefit compared to a normal dev_err() is the standardized format
of the error code, it being emitted symbolically and the fact that
the error code is returned which allows more compact error paths.

Signed-off-by: Shen Lichuan <redacted>
---
  drivers/net/ieee802154/at86rf230.c | 13 +++++--------
  1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index f632b0cfd5ae..3fb536734034 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c

@@ -1532,11 +1532,9 @@ static int at86rf230_probe(struct spi_device *spi)
  
  	rc = device_property_read_u8(&spi->dev, "xtal-trim", &xtal_trim);
  	if (rc < 0) {
-		if (rc != -EINVAL) {
-			dev_err(&spi->dev,
-				"failed to parse xtal-trim: %d\n", rc);
-			return rc;
-		}
+		if (rc != -EINVAL)
+			return dev_err_probe(&spi->dev, rc,
+					     "failed to parse xtal-trim\n");
  		xtal_trim = 0;
  	}
  

@@ -1576,9 +1574,8 @@ static int at86rf230_probe(struct spi_device *spi)
  
  	lp->regmap = devm_regmap_init_spi(spi, &at86rf230_regmap_spi_config);
  	if (IS_ERR(lp->regmap)) {
-		rc = PTR_ERR(lp->regmap);
-		dev_err(&spi->dev, "Failed to allocate register map: %d\n",
-			rc);
+		dev_err_probe(&spi->dev, PTR_ERR(lp->regmap),
+			      "Failed to allocate register map\n");
  		goto free_dev;
  	}