staging: ste_rmi4: fix memory leaks

Free resources before exit.

Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
index 51b4a79..d55a8e4 100644
--- a/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
+++ b/drivers/staging/ste_rmi4/synaptics_i2c_rmi4.c
@@ -764,8 +764,10 @@
 								(pdata,	rfi,
 								&rmi_fd,
 								intr_count);
-					if (retval < 0)
+					if (retval < 0) {
+						kfree(rfi);
 						return retval;
+					}
 				}
 				break;
 			}