dmaengine: imx-sdma: Check for clk_enable() errors
dmaengine: imx-sdma: Check for clk_enable() errors

clk_enable() may fail, so we should better check the return value and
propagate it in the case of error.

Signed-off-by: Fabio Estevam <679188261afeb60eb822cd934fd7b46a48ddd743@freescale.com>
Signed-off-by: Vinod Koul <5cf69c63beb17bf38d63aa0e923ee8256af0e205@intel.com>

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