[PATCH 4.9 71/77] bcache: Correct return value for sysfs attach errors

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Tony Asleson commit 77fa100f27475d08a569b9d51c17722130f089e7 upstream. If you encounter any errors in bch_cached_dev_attach it will return a negative error code. The

[PATCH 4.9 71/77] bcache: Correct return value for sysfs attach errors

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Tony Asleson commit 77fa100f27475d08a569b9d51c17722130f089e7 upstream. If you encounter any errors in bch_cached_dev_attach it will return a negative error code. The variable 'v' which stores