dmaengine: Fix double increment of clientcount in dmachan_get()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.91 by commit 71c601965532c38030133535f7cd93c1efa75af1, it was introduced in version v4.0 by commit d2f4f99db3e9ec8b063cf2e45704e2bb95428317. For more details please see the references link.