Coccinelle suggested using PTR_ERR_OR_ZERO() and looking at the code,
we can use PTR_ERR_OR_ZERO() instead of checking IS_ERR() and then
doing 'return 0'.
Tested-by: NLukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: NSudip Mukherjee <sudipm.mukherjee@gmail.com>
Link: https://lore.kernel.org/r/20201026180026.3350-1-sudipm.mukherjee@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>