bus: imx-weim: fix NULL but dereferenced coccicheck error

Fix following coccicheck warning:
./drivers/bus/imx-weim.c:355:18-21: ERROR: pdev is NULL but dereferenced.
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Acked-by: Ivan Bornyakov <i.bornyakov@metrotek.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/bus/imx-weim.c

@@ -352,8 +352,7 @@ static int of_weim_notify(struct notifier_block *nb, unsigned long action,
 
 		pdev = of_find_device_by_node(rd->dn);
 		if (!pdev) {
-			dev_err(&pdev->dev,
-				"Could not find platform device for '%pOF'\n",
+			pr_err("Could not find platform device for '%pOF'\n",
 				rd->dn);
 
 			ret = notifier_from_errno(-EINVAL);