[patch] memory hotplug: release lock on an error path

[Dan Carpenter]

We need to release the mutex here before returning.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index ca8bfe5..164c8a2 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -299,7 +299,7 @@ static int memory_block_change_state(struct memory_block *mem,
 		for (i = 0; i < sections_per_block; i++) {
 			ret = check_page_reservations(mem->start_section_nr + i);
 			if (ret)
-				return ret;
+				goto out;
 		}
 	}

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