dmaengine: pl330: Initialize pl330 for pl330_prep_dma_memcpy after NULL check of pch
dmaengine: pl330: Initialize pl330 for pl330_prep_dma_memcpy after NULL check of pch

Currently pch pointer is already dereferenced before NULL check
and thus we are getting below warning:
warn: variable dereferenced before check 'pch'

So initialize struct pl330_dmac *pl330 after NULL check
of dma_pl330_chan *pch.

Signed-off-by: Maninder Singh <e4d6a675ffd00e654bdb5954d1e8457eb138a1df@samsung.com>
Reviewed-by: Vaneet Narang <aa9abcc8d45930d1d8c850161c0f9e97f575d6e5@samsung.com>
Signed-off-by: Vinod Koul <5cf69c63beb17bf38d63aa0e923ee8256af0e205@intel.com>

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