spi: Drop io_mutex in error paths

A couple of error paths were missing drops of io_mutex.

Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 51ad42fad567..57179d5eea9a 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1159,6 +1159,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
                 if (ret < 0) {
                         dev_err(&master->dev, "Failed to power device: %d\n",
                                 ret);
+                        mutex_unlock(&master->io_mutex);
                         return;
                 }
         }
@@ -1174,6 +1175,7 @@ static void __spi_pump_messages(struct spi_master *master, bool in_kthread)
 
                         if (master->auto_runtime_pm)
                                 pm_runtime_put(master->dev.parent);
+                        mutex_unlock(&master->io_mutex);
                         return;
                 }
         }