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 v5.10.166 by commit 42ecd72f02cd657b00b559621e7ef7d2c4d3e5f1, it was introduced in version v4.0 by commit d2f4f99db3e9ec8b063cf2e45704e2bb95428317. For more details please see the references link.