isl29020: Remove a redundant semi-colon from return statement

One is enough.
Signed-off-by: NJesper Juhl <jj@chaosbits.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/misc/isl29020.c

@@ -158,7 +158,7 @@ static int als_set_default_config(struct i2c_client *client)
 		dev_err(&client->dev, "default write failed.");
 		return retval;
 	}
-	return 0;;
+	return 0;
 }
 
 static int  isl29020_probe(struct i2c_client *client,