IB/hfi1: Change hfi1_init loop to preserve error returns

If one iteration of the loop causes an error return and a later iteration
doesn't, the later iteration causes the earlier error condition to be
lost. This could result in driver probe succeeding when it should have
failed. Therefore save off the error return in the loop itself rather than
outside the loop.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/staging/rdma/hfi1/init.c

@@ -732,12 +732,12 @@ int hfi1_init(struct hfi1_devdata *dd, int reinit)
 		lastfail = hfi1_create_rcvhdrq(dd, rcd);
 		if (!lastfail)
 			lastfail = hfi1_setup_eagerbufs(rcd);
-		if (lastfail)
+		if (lastfail) {
 			dd_dev_err(dd,
 				   "failed to allocate kernel ctxt's rcvhdrq and/or egr bufs\n");
+			ret = lastfail;
+		}
 	}
-	if (lastfail)
-		ret = lastfail;
 
 	/* Allocate enough memory for user event notification. */
 	len = PAGE_ALIGN(dd->chip_rcv_contexts * HFI1_MAX_SHARED_CTXTS *