i3c: rtio: deal with rtio_cqe_consume() returning NULL

rtio_cqe_consume() may return NULL so we need to check before
using any members of the returned struct.

Fixes #90473
Fixes #90489
Fixes #90497

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

Author: dcpleung

drivers/i3c/i3c_rtio.c

@@ -182,7 +182,11 @@ int i3c_rtio_configure(struct i3c_rtio *ctx, enum i3c_config_type type, void *co
 	rtio_submit(r, 1);
 
 	cqe = rtio_cqe_consume(r);
-	res = cqe->result;
+	if (cqe != NULL) {
+		res = cqe->result;
+	} else {
+		ret = -EIO;
+	}
 	rtio_cqe_release(r, cqe);
 
 out:
@@ -214,7 +218,11 @@ int i3c_rtio_ccc(struct i3c_rtio *ctx, struct i3c_ccc_payload *payload)
 	rtio_submit(r, 1);
 
 	cqe = rtio_cqe_consume(r);
-	res = cqe->result;
+	if (cqe != NULL) {
+		res = cqe->result;
+	} else {
+		ret = -EIO;
+	}
 	rtio_cqe_release(r, cqe);
 
 out:
@@ -245,7 +253,11 @@ int i3c_rtio_recover(struct i3c_rtio *ctx)
 	rtio_submit(r, 1);
 
 	cqe = rtio_cqe_consume(r);
-	res = cqe->result;
+	if (cqe != NULL) {
+		res = cqe->result;
+	} else {
+		ret = -EIO;
+	}
 	rtio_cqe_release(r, cqe);
 
 out: