Update Linux to v5.4.148

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz

Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/infiniband/sw/rdmavt/srq.c b/drivers/infiniband/sw/rdmavt/srq.c
index 24fef02..f547c11 100644
--- a/drivers/infiniband/sw/rdmavt/srq.c
+++ b/drivers/infiniband/sw/rdmavt/srq.c
@@ -111,8 +111,8 @@
 		u32 s = sizeof(struct rvt_rwq) + srq->rq.size * sz;
 
 		srq->ip = rvt_create_mmap_info(dev, s, udata, srq->rq.wq);
-		if (!srq->ip) {
-			ret = -ENOMEM;
+		if (IS_ERR(srq->ip)) {
+			ret = PTR_ERR(srq->ip);
 			goto bail_wq;
 		}