dmaengine: idxd: Fix warning for deadcode.deadstore

Deletes the  second initialization as the value stored to 'dev' during
its initialization (struct device *dev = &idxd->pdev->dev;) is
sufficient.

../drivers/dma/idxd/init.c:988:17: warning: Value stored to 'dev' during
its initialization is never read [deadcode.DeadStores]
  988 |         struct device *dev = &idxd->pdev->dev;
      |                        ^~~   ~~~~~~~~~~~~~~~~

Signed-off-by: Anil S Keshavamurthy <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: anilskeshavamurthy

drivers/dma/idxd/init.c

@@ -1036,7 +1036,6 @@ static void idxd_reset_prepare(struct pci_dev *pdev)
 	const char *idxd_name;
 	int rc;
 
-	dev = &idxd->pdev->dev;
 	idxd_name = dev_name(idxd_confdev(idxd));
 
 	struct idxd_saved_states *idxd_saved __free(kfree) =