ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait()

Add the missing unlock before return from function
afu_ioctl_enable_p9_wait() in the error handling case.

Fixes: e948e06fc63a ("ocxl: Expose the thread_id needed for wait on POWER9")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index 33ae46ce0a8a..e6a607488f8a 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -139,8 +139,10 @@ static long afu_ioctl_enable_p9_wait(struct ocxl_context *ctx,
                 // Locks both status & tidr
                 mutex_lock(&ctx->status_mutex);
                 if (!ctx->tidr) {
-                        if (set_thread_tidr(current))
+                        if (set_thread_tidr(current)) {
+                                mutex_unlock(&ctx->status_mutex);
                                 return -ENOENT;
+                        }
 
                         ctx->tidr = current->thread.tidr;
                 }