platform: goldfish: pipe: Call misc_deregister if init fails

Undo effects of misc_register if driver's init fails after
misc_register.

Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index 4013832f38fb..c386aaf40034 100644
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -844,8 +844,10 @@ static int goldfish_pipe_device_init(struct platform_device *pdev,
         dev->pipes_capacity = INITIAL_PIPES_CAPACITY;
         dev->pipes = kcalloc(dev->pipes_capacity, sizeof(*dev->pipes),
                              GFP_KERNEL);
-        if (!dev->pipes)
+        if (!dev->pipes) {
+                misc_deregister(&dev->miscdev);
                 return -ENOMEM;
+        }
 
         /*
          * We're going to pass two buffers, open_command_params and
@@ -858,6 +860,7 @@ static int goldfish_pipe_device_init(struct platform_device *pdev,
                 __get_free_page(GFP_KERNEL);
         if (!dev->buffers) {
                 kfree(dev->pipes);
+                misc_deregister(&dev->miscdev);
                 return -ENOMEM;
         }