io_uring/zcrx: fix page array leak

d9f595b ("io_uring/zcrx: fix leaking pages on sg init fail") fixed
a page leakage but didn't free the page array, release it as well.

Fixes: b84621d ("io_uring/zcrx: allocate sgtable for umem areas")
Signed-off-by: Pavel Begunkov <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>

Author: isilence

io_uring/zcrx.c

@@ -197,6 +197,7 @@ static int io_import_umem(struct io_zcrx_ifq *ifq,
 					GFP_KERNEL_ACCOUNT);
 	if (ret) {
 		unpin_user_pages(pages, nr_pages);
+		kvfree(pages);
 		return ret;
 	}