[PATCH] drivers: crypto: cpt: cpt_bind_vq_to_grp could return an error code

[George Cherian]

cpt_bind_vq_to_grp() could return an error code. However, it currently
returns a u8. This produce the static checker warning.

drivers/crypto/cavium/cpt/cptpf_mbox.c:70 cpt_bind_vq_to_grp() warn: signedness 
bug returning '(-22)'

Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: George Cherian <george.cher...@cavium.com>
---
 drivers/crypto/cavium/cpt/cptpf_mbox.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/cavium/cpt/cptpf_mbox.c 
b/drivers/crypto/cavium/cpt/cptpf_mbox.c
index 5818b41..20f2c6e 100644
--- a/drivers/crypto/cavium/cpt/cptpf_mbox.c
+++ b/drivers/crypto/cavium/cpt/cptpf_mbox.c
@@ -59,7 +59,7 @@ static void cpt_cfg_vq_priority(struct cpt_device *cpt, int 
vf, u32 pri)
        cpt_write_csr64(cpt->reg_base, CPTX_PF_QX_CTL(0, vf), pf_qx_ctl.u);
 }
 
-static u8 cpt_bind_vq_to_grp(struct cpt_device *cpt, u8 q, u8 grp)
+static int cpt_bind_vq_to_grp(struct cpt_device *cpt, u8 q, u8 grp)
 {
        struct microcode *mcode = cpt->mcode;
        union cptx_pf_qx_ctl pf_qx_ctl;
@@ -90,7 +90,7 @@ static void cpt_handle_mbox_intr(struct cpt_device *cpt, int 
vf)
 {
        struct cpt_vf_info *vfx = &cpt->vfinfo[vf];
        struct cpt_mbox mbx = {};
-       u8 vftype;
+       int vftype;
        struct device *dev = &cpt->pdev->dev;
        /*
         * MBOX[0] contains msg
-- 
2.1.4