IB/qib: remove redundant setting of any in for-loop

The variable all is being set but is never read after this
hence it can be removed from the for loop initialization.
Cleans up clang warning:

drivers/infiniband/hw/qib/qib_file_ops.c:640:7: warning: Value
stored to 'any' is never read
Tested-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/qib/qib_file_ops.c

@@ -637,7 +637,7 @@ static int qib_set_part_key(struct qib_ctxtdata *rcd, u16 key)
 		ret = -EBUSY;
 		goto bail;
 	}
-	for (any = i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
+	for (i = 0; i < ARRAY_SIZE(ppd->pkeys); i++) {
 		if (!ppd->pkeys[i] &&
 		    atomic_inc_return(&ppd->pkeyrefs[i]) == 1) {
 			rcd->pkeys[pidx] = key;