lib/raid6: update recov_rvv.c zero page usage

JIRA: https://issues.redhat.com/browse/RHEL-123668

Update lib/raid6/recov_rvv.c, for 1857fcc ("lib/raid6: replace custom
zero page with ZERO_PAGE"), per Klara.

Link: https://lkml.kernel.org/r/aFkUnXWtxcgOTVkw@gondor.apana.org.au
Fixes: 1857fcc ("lib/raid6: replace custom zero page with ZERO_PAGE")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Song Liu <song@kernel.org>
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: Klara Modin <klarasmodin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
(cherry picked from commit a9ed442)
Signed-off-by: Nigel Croxon <ncroxon@redhat.com>

Author: ncroxon

lib/raid6/recov_rvv.c

@@ -165,10 +165,10 @@ static void raid6_2data_recov_rvv(int disks, size_t bytes, int faila,
 	 * delta p and delta q
 	 */
 	dp = (u8 *)ptrs[faila];
-	ptrs[faila] = (void *)raid6_empty_zero_page;
+	ptrs[faila] = raid6_get_zero_page();
 	ptrs[disks - 2] = dp;
 	dq = (u8 *)ptrs[failb];
-	ptrs[failb] = (void *)raid6_empty_zero_page;
+	ptrs[failb] = raid6_get_zero_page();
 	ptrs[disks - 1] = dq;
 
 	raid6_call.gen_syndrome(disks, bytes, ptrs);
@@ -203,7 +203,7 @@ static void raid6_datap_recov_rvv(int disks, size_t bytes, int faila,
 	 * Use the dead data page as temporary storage for delta q
 	 */
 	dq = (u8 *)ptrs[faila];
-	ptrs[faila] = (void *)raid6_empty_zero_page;
+	ptrs[faila] = raid6_get_zero_page();
 	ptrs[disks - 1] = dq;
 
 	raid6_call.gen_syndrome(disks, bytes, ptrs);