[PATCH v12 21/23] mm: zswap: Consistently use IS_ERR_OR_NULL() to check acomp_ctx resources.

[Kanchana P Sridhar <kanchana.p.sridhar@intel.com>]

This patch uses IS_ERR_OR_NULL() in zswap_cpu_comp_prepare() to check
for valid acomp/req, thereby making it consistent with
acomp_ctx_dealloc().

This is based on this earlier comment [1] from Yosry, when reviewing v8.

[1] https://patchwork.kernel.org/comment/26282128/

Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
---
 mm/zswap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index 27665eaa3f89..3b3716808d7d 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -807,7 +807,7 @@ static int zswap_cpu_comp_prepare(unsigned int cpu, struct hlist_node *node)
 		return ret;
 
 	acomp_ctx->acomp = crypto_alloc_acomp_node(pool->tfm_name, 0, 0, cpu_to_node(cpu));
-	if (IS_ERR(acomp_ctx->acomp)) {
+	if (IS_ERR_OR_NULL(acomp_ctx->acomp)) {
 		pr_err("could not alloc crypto acomp %s : %ld\n",
 				pool->tfm_name, PTR_ERR(acomp_ctx->acomp));
 		ret = PTR_ERR(acomp_ctx->acomp);
@@ -816,7 +816,7 @@ static int zswap_cpu_comp_prepare(unsigned int cpu, struct hlist_node *node)
 	acomp_ctx->is_sleepable = acomp_is_async(acomp_ctx->acomp);
 
 	acomp_ctx->req = acomp_request_alloc(acomp_ctx->acomp);
-	if (!acomp_ctx->req) {
+	if (IS_ERR_OR_NULL(acomp_ctx->req)) {
 		pr_err("could not alloc crypto acomp_request %s\n",
 		       pool->tfm_name);
 		goto fail;
-- 
2.27.0