Staging: dgnc: Fix checking return value of register_chrdev
Staging: dgnc: Fix checking return value of register_chrdev

The failure code is negative. So check <0 instead of <=0.
Return the failure code instead of -ENXIO.

Signed-off-by: Salah Triki <3ee76e0b01c36d321cce1afaa1591c25b151cfd7@acm.org>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs