crypto: caam/qi - Change a couple IS_ERR_OR_NULL() checks to IS_ERR()

create_caam_req_fq() doesn't return NULL pointers so there is no need to
check.  The NULL checks are problematic because it's hard to say how a
NULL return should be handled, so removing the checks is a nice cleanup.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/caam/qi.c

@@ -318,7 +318,7 @@ int caam_drv_ctx_update(struct caam_drv_ctx *drv_ctx, u32 *sh_desc)
 	/* Create a new req FQ in parked state */
 	new_fq = create_caam_req_fq(drv_ctx->qidev, drv_ctx->rsp_fq,
 				    drv_ctx->context_a, 0);
-	if (IS_ERR_OR_NULL(new_fq)) {
+	if (IS_ERR(new_fq)) {
 		dev_err(qidev, "FQ allocation for shdesc update failed\n");
 		return PTR_ERR(new_fq);
 	}
@@ -431,7 +431,7 @@ struct caam_drv_ctx *caam_drv_ctx_init(struct device *qidev,
 	/* Attach request FQ */
 	drv_ctx->req_fq = create_caam_req_fq(qidev, drv_ctx->rsp_fq, hwdesc,
 					     QMAN_INITFQ_FLAG_SCHED);
-	if (IS_ERR_OR_NULL(drv_ctx->req_fq)) {
+	if (IS_ERR(drv_ctx->req_fq)) {
 		dev_err(qidev, "create_caam_req_fq failed\n");
 		dma_unmap_single(qidev, hwdesc, size, DMA_BIDIRECTIONAL);
 		kfree(drv_ctx);