remoteproc: qcom_wcnss: Fix reserved region mapping failure

Commit c70b9d5 ("remoteproc: qcom: Use of_reserved_mem_region_*
functions for "memory-region"") switched from devm_ioremap_wc() to
devm_ioremap_resource_wc(). The difference is devm_ioremap_resource_wc()
also requests the resource which fails. Testing of both fixed and
dynamic reserved regions indicates that requesting the resource should
work, so I'm not sure why it doesn't work in this case. Fix the issue by
reverting back to devm_ioremap_wc().

Reported-by: Marek Szyprowski <[email protected]>
Reported-by: André Apitzsch <[email protected]>
Fixes: c70b9d5 ("remoteproc: qcom: Use of_reserved_mem_region_* functions for "memory-region"")
Signed-off-by: Rob Herring (Arm) <[email protected]>
Tested-by: Marek Szyprowski <[email protected]>
Tested-by: André Apitzsch <[email protected]> # on BQ Aquaris M5
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

Author: robherring

drivers/remoteproc/qcom_wcnss.c

@@ -537,7 +537,7 @@ static int wcnss_alloc_memory_region(struct qcom_wcnss *wcnss)
 
 	wcnss->mem_phys = wcnss->mem_reloc = res.start;
 	wcnss->mem_size = resource_size(&res);
-	wcnss->mem_region = devm_ioremap_resource_wc(wcnss->dev, &res);
+	wcnss->mem_region = devm_ioremap_wc(wcnss->dev, wcnss->mem_phys, wcnss->mem_size);
 	if (IS_ERR(wcnss->mem_region)) {
 		dev_err(wcnss->dev, "unable to map memory region: %pR\n", &res);
 		return PTR_ERR(wcnss->mem_region);