net: pse-pd: tps23881: Simplify function returns by removing redundant checks

Cleaned up several functions in tps23881 by removing redundant checks on
return values at the end of functions. These check has been removed, and
the return statement now directly returns the function result, reducing
the code's complexity and making it more concise.

Reviewed-by: Andrew Lunn <[email protected]>
Acked-by: Oleksij Rempel <[email protected]>
Reviewed-by: Kyle Swenson <[email protected]>
Signed-off-by: Kory Maincent <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>

Author: kmaincent

drivers/net/pse-pd/tps23881.c

@@ -59,7 +59,6 @@ static int tps23881_pi_enable(struct pse_controller_dev *pcdev, int id)
 	struct i2c_client *client = priv->client;
 	u8 chan;
 	u16 val;
-	int ret;
 
 	if (id >= TPS23881_MAX_CHANS)
 		return -ERANGE;
@@ -78,11 +77,7 @@ static int tps23881_pi_enable(struct pse_controller_dev *pcdev, int id)
 			val |= BIT(chan + 4);
 	}
 
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
 }
 
 static int tps23881_pi_disable(struct pse_controller_dev *pcdev, int id)
@@ -91,7 +86,6 @@ static int tps23881_pi_disable(struct pse_controller_dev *pcdev, int id)
 	struct i2c_client *client = priv->client;
 	u8 chan;
 	u16 val;
-	int ret;
 
 	if (id >= TPS23881_MAX_CHANS)
 		return -ERANGE;
@@ -110,11 +104,7 @@ static int tps23881_pi_disable(struct pse_controller_dev *pcdev, int id)
 			val |= BIT(chan + 8);
 	}
 
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_PW_EN, val);
 }
 
 static int tps23881_pi_is_enabled(struct pse_controller_dev *pcdev, int id)
@@ -480,7 +470,7 @@ tps23881_write_port_matrix(struct tps23881_priv *priv,
 	struct i2c_client *client = priv->client;
 	u8 pi_id, lgcl_chan, hw_chan;
 	u16 val = 0;
-	int i, ret;
+	int i;
 
 	for (i = 0; i < port_cnt; i++) {
 		pi_id = port_matrix[i].pi_id;
@@ -511,11 +501,7 @@ tps23881_write_port_matrix(struct tps23881_priv *priv,
 	}
 
 	/* Write hardware ports matrix */
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_PORT_MAP, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_PORT_MAP, val);
 }
 
 static int
@@ -564,11 +550,7 @@ tps23881_set_ports_conf(struct tps23881_priv *priv,
 			val |= BIT(port_matrix[i].lgcl_chan[1]) |
 			       BIT(port_matrix[i].lgcl_chan[1] + 4);
 	}
-	ret = i2c_smbus_write_word_data(client, TPS23881_REG_DET_CLA_EN, val);
-	if (ret)
-		return ret;
-
-	return 0;
+	return i2c_smbus_write_word_data(client, TPS23881_REG_DET_CLA_EN, val);
 }
 
 static int
@@ -594,11 +576,7 @@ tps23881_set_ports_matrix(struct tps23881_priv *priv,
 	if (ret)
 		return ret;
 
-	ret = tps23881_set_ports_conf(priv, port_matrix);
-	if (ret)
-		return ret;
-
-	return 0;
+	return tps23881_set_ports_conf(priv, port_matrix);
 }
 
 static int tps23881_setup_pi_matrix(struct pse_controller_dev *pcdev)