I/OAT: fix null device in call to dev_err()

We can't use the device in a dev_err() after a kzalloc failure or after the
kfree, so simplify it to the pdev that was originally passed in.

Cc: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index c17ec32..45e7b46 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -1363,7 +1363,7 @@
 err_dma_pool:
 	kfree(device);
 err_kzalloc:
-	dev_err(&device->pdev->dev,
+	dev_err(&pdev->dev,
 		"Intel(R) I/OAT DMA Engine initialization failed\n");
 	return NULL;
 }