[PATCH] fpga: dfl: fme: error pointer vs NULL bug

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The dfl_fme_create_region() function doesn't return NULL pointers, it
returns error pointers.

Fixes: 29de76240e86 ("fpga: dfl: fme: add partial reconfiguration sub feature support")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
index fc9fd2d0482f..0b840531ef33 100644
--- a/drivers/fpga/dfl-fme-pr.c
+++ b/drivers/fpga/dfl-fme-pr.c
@@ -420,7 +420,7 @@ static int pr_mgmt_init(struct platform_device *pdev,
 		/* Create region for each port */
 		fme_region = dfl_fme_create_region(pdata, mgr,
 						   fme_br->br, i);
-		if (!fme_region) {
+		if (IS_ERR(fme_region)) {
 			ret = PTR_ERR(fme_region);
 			goto destroy_region;
 		}
--
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