[PATCH -next] remoteproc: k3-dsp: Fix return value check in k3_dsp_rproc_of_get_memories()

[YueHaibing]

In case of error, the function devm_ioremap_wc() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Fixes: 87218f96c21a ("remoteproc: k3-dsp: Add support for C71x DSPs")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/remoteproc/ti_k3_dsp_remoteproc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c 
b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index 9011e477290c..f373df35d7d0 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -445,10 +445,10 @@ static int k3_dsp_rproc_of_get_memories(struct 
platform_device *pdev,
 
                kproc->mem[i].cpu_addr = devm_ioremap_wc(dev, res->start,
                                                         resource_size(res));
-               if (IS_ERR(kproc->mem[i].cpu_addr)) {
+               if (!kproc->mem[i].cpu_addr) {
                        dev_err(dev, "failed to map %s memory\n",
                                data->mems[i].name);
-                       return PTR_ERR(kproc->mem[i].cpu_addr);
+                       return -EBUSY;
                }
                kproc->mem[i].bus_addr = res->start;
                kproc->mem[i].dev_addr = data->mems[i].dev_addr;
-- 
2.17.1