dma: cppi41: use cppi41_pop_desc() where possible
Use cppi41_pop_desc() when appropriate instead of open-coding the same functionality again. That makes the code more readable. The function has to be moved some lines up for this change. Signed-off-by: NDaniel Mack <zonque@gmail.com> Signed-off-by: NSebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: NVinod Koul <vinod.koul@intel.com>
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