[PATCH] Staging: fbtft: fix memory leak in fbtft_framebuffer_alloc

[Navid Emamdoost]

In fbtft_framebuffer_alloc the error handling path should take care of
releasing frame buffer after it is allocated via framebuffer_alloc, too.
Therefore, in two failure cases the goto destination is changed to
address this issue.

Fixes: c296d5f9957c ("staging: fbtft: core support")
Signed-off-by: Navid Emamdoost <navid.emamdoost at gmail.com>
---
 drivers/staging/fbtft/fbtft-core.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
index cf5700a2ea66..a0a67aa517f0 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -714,7 +714,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	if (par->gamma.curves && gamma) {
 		if (fbtft_gamma_parse_str(par, par->gamma.curves, gamma,
 					  strlen(gamma)))
-			goto alloc_fail;
+			goto release_framebuf;
 	}
 
 	/* Transmit buffer */
@@ -731,7 +731,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 	if (txbuflen > 0) {
 		txbuf = devm_kzalloc(par->info->device, txbuflen, GFP_KERNEL);
 		if (!txbuf)
-			goto alloc_fail;
+			goto release_framebuf;
 		par->txbuf.buf = txbuf;
 		par->txbuf.len = txbuflen;
 	}
@@ -753,6 +753,9 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
 
 	return info;
 
+release_framebuf:
+	framebuffer_release(info);
+
 alloc_fail:
 	vfree(vmem);
 
-- 
2.17.1