crypto: iaa - Do not clobber req->base.data

JIRA: https://issues.redhat.com/browse/RHEL-87766
Upstream Status: merged into herbert/crypto-2.6.git

Conflicts: missing 02c9742 ("crypto: iaa - Remove dst_null support")
  which is a part of a bigger patchset which was not backported. A result
  is small context differences.

commit cc98d8c
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Mon Mar 24 12:04:18 2025 +0800

    crypto: iaa - Do not clobber req->base.data

    The req->base.data field is for the user and must not be touched by
    the driver, unless you save it first.

    The iaa driver doesn't seem to be using the req->base.data value
    so just remove the assignment.

    Fixes: 09646c9 ("crypto: iaa - Add irq support for the crypto async interface")
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: Vladis Dronov <vdronov@redhat.com>

Author: nefigtut

drivers/crypto/intel/iaa/iaa_crypto_main.c

@@ -1191,8 +1191,7 @@ static int iaa_compress(struct crypto_tfm *tfm,	struct acomp_req *req,
 			" src_addr %llx, dst_addr %llx\n", __func__,
 			active_compression_mode->name,
 			src_addr, dst_addr);
-	} else if (ctx->async_mode && !disable_async)
-		req->base.data = idxd_desc;
+	}
 
 	dev_dbg(dev, "%s: compression mode %s,"
 		" desc->src1_addr %llx, desc->src1_size %d,"
@@ -1429,8 +1428,7 @@ static int iaa_decompress(struct crypto_tfm *tfm, struct acomp_req *req,
 			" src_addr %llx, dst_addr %llx\n", __func__,
 			active_compression_mode->name,
 			src_addr, dst_addr);
-	} else if (ctx->async_mode && !disable_async)
-		req->base.data = idxd_desc;
+	}
 
 	dev_dbg(dev, "%s: decompression mode %s,"
 		" desc->src1_addr %llx, desc->src1_size %d,"