dmaengine: qcom_hidma: remove unneeded of_node_put()

Device node iterators put the previous value of the index variable, so an
explicit put causes a double put.

Generated by: scripts/coccinelle/iterators/device_node_continue.cocci

Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/qcom/hidma_mgmt.c

···
 	for_each_matching_node(child, hidma_mgmt_match) {
 		/* device tree based firmware here */
 		hidma_mgmt_of_populate_channels(child);
-		of_node_put(child);
 	}
 #endif
 	platform_driver_register(&hidma_mgmt_driver);