dmaengine: fsl-edma: fix DMA channel leak in eDMAv4

Allocate channel count consistently increases due to a missing source ID
(srcid) cleanup in the fsl_edma_free_chan_resources() function at imx93
eDMAv4.

Reset 'srcid' at fsl_edma_free_chan_resources().

Cc: stable@vger.kernel.org
Fixes: 72f5801a

 ("dmaengine: fsl-edma: integrate v3 support")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231127214325.2477247-1-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>