dmaengine: idxd: match type for retries var in idxd_enqcmds()

mainline inclusion
from mainline-v5.18
commit 5d9d16e5
category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO
CVE: NA

Intel-SIG: commit 5d9d16e5 dmaengine: idxd: match type for retries var in idxd_enqcmds().
Incremental backporting patches for DSA/IAA on Intel Xeon platform.

--------------------------------

wq->enqcmds_retries is defined as unsigned int. However, retries on the
stack is defined as int. Change retries to unsigned int to compare the same
type.

Fixes: 7930d855 ("dmaengine: idxd: add knob for enqcmds retries")
Suggested-by: NThiago Macieira <thiago.macieira@intel.com>
Signed-off-by: NDave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/165031747059.3658198.6035308204505664375.stgit@djiang5-desk3.ch.intel.comSigned-off-by: NVinod Koul <vkoul@kernel.org>
Signed-off-by: NXiaochen Shen <xiaochen.shen@intel.com>

drivers/dma/idxd/submit.c

@@ -150,7 +150,8 @@ static void llist_abort_desc(struct idxd_wq *wq, struct idxd_irq_entry *ie,
  */
 int idxd_enqcmds(struct idxd_wq *wq, void __iomem *portal, const void *desc)
 {
-	int rc, retries = 0;
+	unsigned int retries = 0;
+	int rc;
 
 	do {
 		rc = enqcmds(portal, desc);