dmaengine: jz4740: Remove extra check
dmaengine: jz4740: Remove extra check

Remove double check on chan->desc.

Found by Coccinelle.

Signed-off-by: Tapasweni Pathak <3b69268f7ace5bdf0735d0c2203b969d339216e4@gmail.com>
Acked-by: Julia Lawall <018ee4f95fc49739477deedb13d2cd210889e607@lip6.fr>
Signed-off-by: Vinod Koul <5cf69c63beb17bf38d63aa0e923ee8256af0e205@intel.com>

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