[PATCH] video: fbdev: lcd_mipid: Fix a memory leak in an error handling path

[Christophe JAILLET]

If 'mipid_detect()' fails, we must free 'md' to avoid a memory leak.

While at it, modernize the function:
   - remove a useless message in case of memory allocation failure
   - change a '== NULL' into a '!'

Fixes: 66d2f99d0bb5 ("omapfb: add support for MIPI-DCS compatible LCDs")
Signed-off-by: Christophe JAILLET <christophe.jail...@wanadoo.fr>
---
 drivers/video/fbdev/omap/lcd_mipid.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/omap/lcd_mipid.c 
b/drivers/video/fbdev/omap/lcd_mipid.c
index a75ae0c9b14c..b4b93ff4b41a 100644
--- a/drivers/video/fbdev/omap/lcd_mipid.c
+++ b/drivers/video/fbdev/omap/lcd_mipid.c
@@ -551,10 +551,8 @@ static int mipid_spi_probe(struct spi_device *spi)
        int r;
 
        md = kzalloc(sizeof(*md), GFP_KERNEL);
-       if (md == NULL) {
-               dev_err(&spi->dev, "out of memory\n");
+       if (!md)
                return -ENOMEM;
-       }
 
        spi->mode = SPI_MODE_0;
        md->spi = spi;
@@ -563,11 +561,15 @@ static int mipid_spi_probe(struct spi_device *spi)
 
        r = mipid_detect(md);
        if (r < 0)
-               return r;
+               goto free_md;
 
        omapfb_register_panel(&md->panel);
 
        return 0;
+
+free_md:
+       kfree(md);
+       return r;
 }
 
 static int mipid_spi_remove(struct spi_device *spi)
-- 
2.30.2